Casio FXCP400 User Manual

ClassPad II

fx-CP400

E

User’s Guide

CASIO Education website URL

http://edu.casio.com

Access the URL below and register as a user.

http://edu.casio.com/dl/

Be sure to keep physical records of all important data!

Low battery power or incorrect replacement of the batteries that power the ClassPad can cause the data stored
in memory to be corrupted or even lost entirely. Stored data can also be affected by strong electrostatic charge
or strong impact. It is up to you to keep backup copies of data to protect against its loss.

Backing Up Data

ClassPad data can be converted to a VCP file or XCP file and transferred to a computer for storage. For details,
see “15-2 Performing Data Communication between the ClassPad and a Personal Computer”.

• Be sure to keep all user documentation handy for future reference.

• The sample screens shown in this manual are for illustrative purposes only, and may not be exactly the
same as the screens actually produced by the ClassPad.

• The contents of this manual are subject to change without notice.

• No part of this manual may be reproduced in any form without the express written consent of the
manufacturer.

• The options described in “Chapter 15: Performing Data Communication” in this manual may not be
available in certain geographic areas. For full details on availability in your area, contact your nearest
CASIO dealer or distributor.

• In no event shall CASIO Computer Co., Ltd. be liable to anyone for special, collateral, incidental, or
consequential damages in connection with or arising out of the purchase or use of these materials.
Moreover, CASIO Computer Co., Ltd. shall not be liable for any claim of any kind whatsoever against the
use of these materials by any other party.

• Windows® and Windows Vista® are registered trademarks or trademarks of Microsoft Corporation in the
United States and/or other countries.

• Mac, Macintosh, and Mac OS are registered trademarks or trademarks of Apple Inc. in the United States
and/or other countries.

• Fugue © 1999 – 2012 Kyoto Software Research, Inc. All rights reserved.

• Company and product names used in this manual may be registered trademarks or trademarks of their
respective owners.

• Note that trademark ™ and registered trademark ® are not used within the text of this manual.

2

Contents

About This User’s Guide ............................................................................................................................9

Chapter 1: Basics ................................................................................................................ 10

1-1 General Guide .........................................................................................................................10

ClassPad at a Glance...............................................................................................................................10

Turning Power On or Off .......................................................................................................................... 11

1-2 Power Supply ..........................................................................................................................11

1-3 Built-in Application Basic Operations .................................................................................. 12

Using the Application Menu......................................................................................................................12

Built-in Applications ..................................................................................................................................12

Application Window ..................................................................................................................................13

Using the O Menu ...................................................................................................................................14

Interpreting Status Bar Information ..........................................................................................................15

Pausing and Terminating an Operation ....................................................................................................15

1-4 Input .........................................................................................................................................15

Using the Soft Keyboard ..........................................................................................................................15

Soft Keyboard Key Sets ........................................................................................................................... 16

Input Basics .............................................................................................................................................. 17

Various Soft Keyboard Operations ........................................................................................................... 20

1-5 ClassPad Data ......................................................................................................................... 25

Data Types and Storage Locations (Memory Areas) ............................................................................... 25

Main Memory Data Types ........................................................................................................................ 26

Main Memory Folders ...............................................................................................................................26

Using Variable Manager ........................................................................................................................... 27

Managing Application Files ......................................................................................................................30

1-6 Creating and Using Variables ................................................................................................ 31

Creating a New Variable ..........................................................................................................................31

Variable Usage Example .......................................................................................................................... 32

“library” Folder Variables .......................................................................................................................... 32

Rules Governing Variable Access ............................................................................................................ 33

1-7 Configuring Application Format Settings .............................................................................34

Application Format Settings .....................................................................................................................34

Initializing All Application Format Settings ................................................................................................40

1-8 When you keep having problems… ...................................................................................... 41

Chapter 2: Main Application ............................................................................................... 42

Main Application-Specific Menus and Buttons ......................................................................................... 42

2-1 Basic Calculations .................................................................................................................. 42

Arithmetic Calculations and Parentheses Calculations ............................................................................ 42

Using the e Key .................................................................................................................................. 43

Omitting the Multiplication Sign ................................................................................................................ 43

Using the Answer Variable (ans) .............................................................................................................. 43

Assigning a Value to a Variable ...............................................................................................................43

Calculation Priority Sequence .................................................................................................................. 44

Calculation Modes .................................................................................................................................... 44

2-2 Using the Calculation History ................................................................................................46

2-3 Function Calculations ............................................................................................................ 46

2-4 List Calculations ..................................................................................................................... 55

Inputting List Data in the Work Area .........................................................................................................55

LIST Variable Element Operations ........................................................................................................... 55

3

Using a List in a Calculation ..................................................................................................................... 55

Using a List to Assign Different Values to Multiple Variables ................................................................... 55

2-5 Matrix and Vector Calculations ............................................................................................. 56

Inputting Matrix Data ................................................................................................................................ 56

Performing Matrix Calculations ................................................................................................................56

Using a Matrix to Assign Different Values to Multiple Variables ...............................................................57

2-6 Specifying a Number Base ....................................................................................................57

Binary, Octal, Decimal, and Hexadecimal Calculation Ranges ................................................................ 57

Selecting a Number Base.........................................................................................................................58

Arithmetic Operations ............................................................................................................................... 58

Bitwise Operations ...................................................................................................................................58

Using the baseConvert Function (Number System Transform) ...............................................................59

2-7 Using the Action Menu ........................................................................................................... 59

Abbreviations and Punctuation Used in This Section ...............................................................................59

Example Screenshots ..............................................................................................................................60

Using the Transformation Submenu .........................................................................................................60

Using the Advanced Submenu ................................................................................................................. 62

Using the Calculation Submenu ............................................................................................................... 65

Using the Complex Submenu ...................................................................................................................67

Using the List-Create Submenu ............................................................................................................... 69

Using the List-Statistics and List-Calculation Submenus ......................................................................... 70

Using the Matrix-Create Submenu ........................................................................................................... 73

Using the Matrix-Calculation and Matrix-Row&Column Submenus ......................................................... 74

Using the Vector Submenu ......................................................................................................................77

Using the Equation/Inequality Submenu ................................................................................................. 79

Using the Assistant Submenu .................................................................................................................. 82

Using the Distribution/Inv.Dist Submenu .................................................................................................. 82

Using the Financial Submenu ..................................................................................................................88

Using the Command Submenu ................................................................................................................ 88

2-8 Using the Interactive Menu ................................................................................................... 89

Interactive Menu Example ........................................................................................................................ 89

Using the “apply” Command .....................................................................................................................89

2-9 Using the Main Application in Combination with Other Applications ...............................89

Using Another Application’s Window ........................................................................................................90

Using the Stat Editor Window ...................................................................................................................90

Using the Geometry Window ....................................................................................................................91

2-10 Using Verify ........................................................................................................................... 92

2-11 Using Probability ..................................................................................................................92

2-12 Running a Program in the Main Application ...................................................................... 93

Chapter 3: Graph & Table Application ............................................................................... 95

Graph & Table Application-Specific Menus and Buttons ..........................................................................95

3-1 Storing Functions ................................................................................................................... 97

Using Graph Editor Sheets.......................................................................................................................97

Storing a Function .................................................................................................................................... 97

Graphing a Stored Function ..................................................................................................................... 98

Shading the Region Bounded by Two Expressions ................................................................................. 99

Overlaying Two Inequalities in an Intersection Plot / Union Plot .............................................................. 99

Saving Graph Editor Data to Graph Memory .........................................................................................100

3-2 Using the Graph Window ..................................................................................................... 100

Configuring View Window Parameters for the Graph Window ............................................................... 100

Using View Window Memory ..................................................................................................................102

Panning the Graph Window ...................................................................................................................103

4

Scrolling the Graph Window ................................................................................................................... 103

Zooming the Graph Window ...................................................................................................................103

Using Quick Zoom .................................................................................................................................. 104

Using Built-in Functions for Graphing .....................................................................................................104

Saving a Screenshot of a Graph ............................................................................................................ 105

Adjusting the Lightness (Fade I/O) of the Graph Window Background Image ....................................... 105

3-3 Using Table & Graph.............................................................................................................106

Generating a Number Table ................................................................................................................... 106

Showing Linked Displays of Number Table Coordinates and Graph Coordinates (Link Trace) ............. 107

Generating Number Table Values from a Graph ....................................................................................108

Generating a Summary Table ................................................................................................................ 108

3-4 Using Trace ...........................................................................................................................109

Using Trace to Read Graph Coordinates ............................................................................................... 109

3-5 Using the Sketch Menu ........................................................................................................ 110

Using Sketch Menu Commands ............................................................................................................. 110

3-6 Analyzing a Function Used to Draw a Graph .....................................................................112

What You Can Do Using the G-Solve Menu Commands ....................................................................... 112

Using G-Solve Menu Commands ........................................................................................................... 112

3-7 Modifying a Graph ................................................................................................................ 113

Chapter 4: Conics Application ..........................................................................................114

Conics Application-Specific Menus and Buttons .................................................................................... 114

4-1 Inputting an Equation ........................................................................................................... 115

4-2 Drawing a Conics Graph ...................................................................................................... 115

Drawing a Parabola ................................................................................................................................ 115

Drawing a Circle ..................................................................................................................................... 116

Drawing an Ellipse..................................................................................................................................116

Drawing a Hyperbola .............................................................................................................................. 116

Drawing a General Conics .....................................................................................................................116

4-3 Using G-Solve to Analyze a Conics Graph ......................................................................... 116

What You Can Do Using the G-Solve Menu Commands ....................................................................... 116

Using G-Solve Menu Commands ........................................................................................................... 117

Chapter 5: Differential Equation Graph Application........................................................118

Differential Equation Editor Window-Specific Menus and Buttons ......................................................... 118

Differential Equation Graph Window-Specific Menus and Buttons ........................................................118

5-1 Graphing a Differential Equation ......................................................................................... 119

Graphing a First Order Differential Equation .......................................................................................... 119

Graphing a Second Order Differential Equation ..................................................................................... 120

Graphing an Nth-order Differential Equation .......................................................................................... 120

Configuring and Modifying Initial Conditions .......................................................................................... 121

Configuring Differential Equation Graph View Window Parameters ......................................................122

5-2 Drawing f ( x) Type Function Graphs and Parametric Function Graphs ...........................123

5-3 Using Trace to Read Graph Coordinates ............................................................................123

5-4 Graphing an Expression or Value by Dropping It into the Differential Equation

Graph Window ......................................................................................................................124

Chapter 6: Sequence Application .................................................................................... 125

Sequence Application-Specific Menus and Buttons ............................................................................... 125

6-1 Recursive and Explicit Form of a Sequence ...................................................................... 126

Generating a Number Table ................................................................................................................... 126

Determining the General Term of a Recursion Expression .................................................................... 127

5

Calculating the Sum of a Sequence ....................................................................................................... 127

6-2 Graphing a Recursion ..........................................................................................................127

Chapter 7: Statistics Application ..................................................................................... 128

7-1 Using Stat Editor ...................................................................................................................128

Basic List Operations .............................................................................................................................128

Menus and Buttons Used for List Editing ............................................................................................... 129

7-2 Drawing a Statistical Graph ................................................................................................. 130

Operation Flow Up to Statistical Graphing ............................................................................................. 130

Graphing Single-Variable Statistical Data .............................................................................................. 131

Graphing Paired-Variable Statistical Data .............................................................................................. 132

Overlaying a Regression Graph on a Scatter Plot .................................................................................134

Overlaying a Function Graph on a Statistical Graph .............................................................................. 135

Stat Graph Window Menus and Buttons ................................................................................................ 135

7-3 Performing Basic Statistical Calculations ..........................................................................136

Calculating Statistical Values ................................................................................................................. 136

Performing Regression Calculations ...................................................................................................... 138

Viewing the Results of the Last Statistical Calculation Performed (DispStat) ........................................ 139

7-4 Performing Advanced Statistical Calculations .................................................................. 139

Performing Test, Confidence Interval and Distribution Calculations Using the Wizard .......................... 139

Tests.......................................................................................................................................................141

Confidence Intervals...............................................................................................................................143

Distributions............................................................................................................................................145

Input and Output Terms .........................................................................................................................148

Chapter 8: Geometry Application .................................................................................... 150

Geometry Application-Specific Menus and Buttons ............................................................................... 150

Configuring Geometry View Window Settings ........................................................................................151

About the Geometry Format Dialog Box ................................................................................................151

8-1 Drawing Figures ....................................................................................................................151

Drawing a Figure .................................................................................................................................... 151

Inserting Text Strings into the Screen .................................................................................................... 155

Attaching an Angle Measurement to a Figure ........................................................................................ 155

Displaying the Measurements of a Figure .............................................................................................. 155

Displaying the Result of a Calculation that Uses On-screen Measurement Values ............................... 156

Using the Special Polygon Submenu ..................................................................................................... 156

Using the Construct Submenu ...............................................................................................................157

8-2 Editing Figures ......................................................................................................................161

Selecting and Deselecting Figures ......................................................................................................... 161

Moving and Copying Figures ..................................................................................................................162

Pinning an Annotation on the Geometry Window ...................................................................................162

Specifying the Number Format of a Measurement .................................................................................162

Specifying the Color and Line Type of a Displayed Object .................................................................... 163

Changing the Display Priority of Objects ................................................................................................ 163

8-3 Using the Measurement Box ...............................................................................................164

Viewing the Measurements of a Figure .................................................................................................. 164

Specifying and Constraining a Measurement of a Figure ......................................................................165

Changing a Label or Adding a Name to an Element .............................................................................. 166

8-4 Working with Animations .....................................................................................................167

Using Animation Commands .................................................................................................................. 167

8-5 Using the Geometry Application with Other Applications ................................................170

Drag and Drop ........................................................................................................................................ 170

Copy and Paste ...................................................................................................................................... 170

6

Chapter 9: Numeric Solver Application ........................................................................... 171

Numeric Solver Application-Specific Menus and Buttons ......................................................................171

Inputting an Equation .............................................................................................................................171

Solving an Equation ...............................................................................................................................171

Chapter 10: eActivity Application .................................................................................... 173

eActivity Application-Specific Menus and Buttons ..................................................................................173

10-1 Creating an eActivity .......................................................................................................... 173

Basic Steps for Creating an eActivity ..................................................................................................... 173

Inserting Data into an eActivity ............................................................................................................... 174

Inserting an Application Data Strip ......................................................................................................... 175

Inserting a Geometry Link Row .............................................................................................................. 177

10-2 Transferring eActivity Files ................................................................................................178

File Compatibility .................................................................................................................................... 178

Transferring eActivity Files between a ClassPad Unit and a Computer ................................................. 178

Transferring eActivity Files between Two ClassPad Units ..................................................................... 178

Chapter 11: Financial Application .................................................................................... 179

11-1 Financial Application Basic Operations ...........................................................................179

Page Operations ....................................................................................................................................180

Configuring Financial Application Settings ............................................................................................. 181

11-2 Performing Financial Calculations ....................................................................................182

11-3 Calculation Formulas .........................................................................................................182

Simple Interest .......................................................................................................................................182

Compound Interest ................................................................................................................................. 183

Cash Flow ..............................................................................................................................................183

Amortization ...........................................................................................................................................184

Interest Conversion ................................................................................................................................ 184

Cost/Sell/Margin .....................................................................................................................................185

Depreciation ...........................................................................................................................................185

Bond Calculation .................................................................................................................................... 185

Break-Even Point ...................................................................................................................................186

Margin of Safety ..................................................................................................................................... 186

Financial Leverage ................................................................................................................................. 186

Operating Leverage................................................................................................................................186

Combined Leverage ............................................................................................................................... 186

Quantity Conversion ............................................................................................................................... 186

11-4 Financial Calculation Functions ........................................................................................187

11-5 Input and Output Field Names ...........................................................................................188

Chapter 12: Program Application .................................................................................... 189

Program Application-Specific Menus and Buttons ................................................................................. 189

12-1 Creating and Running Program ........................................................................................190

Creating a Program ................................................................................................................................ 190

Running a Program ................................................................................................................................ 192

Terminating Program Execution ............................................................................................................. 193

Creating a Text File ................................................................................................................................ 193

Using Text Files......................................................................................................................................194

Converting a Text File to a Program File ................................................................................................194

Converting a Program File to an Executable File ................................................................................... 194

12-2 Debugging a Program ........................................................................................................ 195

Debugging After an Error Message Appears .........................................................................................195

Debugging a Program Following Unexpected Results ........................................................................... 195

7

Editing a Program...................................................................................................................................195

12-3 User-defined Functions ......................................................................................................196

Creating a New User-defined Function .................................................................................................. 196

Executing a User-defined Function ........................................................................................................ 197

Editing a User-defined Function ............................................................................................................. 197

12-4 Program Command Reference .......................................................................................... 198

Using This Reference ............................................................................................................................. 198

Syntax Conventions ...............................................................................................................................198

Command List ........................................................................................................................................ 199

12-5 Including ClassPad Functions in Programs ....................................................................218

Including Graphing Functions in a Program ........................................................................................... 218

Including Table & Graph Functions in a Program ..................................................................................218

Including Recursion Table and Recursion Graph Functions in a Program ............................................218

Including Statistical Graphing and Calculation Functions in a Program ................................................. 218

Including Financial Calculation Functions in a Program .........................................................................218

Chapter 13: Spreadsheet Application .............................................................................. 219

Spreadsheet Window-Specific Menus and Buttons ...............................................................................219

Changing the Width of a Column ...........................................................................................................220

Option Settings ....................................................................................................................................... 221

13-1 Inputting and Editing Cell Contents ..................................................................................221

Selecting Cells........................................................................................................................................221

Inputting Data into a Cell ........................................................................................................................ 222

Inputting a Formula ................................................................................................................................222

Inputting a Cell Reference ...................................................................................................................... 223

Cell Data Types (Text Data and Calculation Data) ................................................................................224

Inputting a Constant into a Calculation Data Type Cell .......................................................................... 224

Using the Cell Viewer Window ............................................................................................................... 226

Changing the Text Color and Fill Color of Specific Cells ........................................................................226

Copying or Cutting Cells and Pasting Them to Another Location .......................................................... 227

Recalculating Spreadsheet Expressions ................................................................................................ 227

Importing and Exporting Variable Values ............................................................................................... 228

13-2 Graphing ..............................................................................................................................229

Basic Graphing Steps ............................................................................................................................229

Column Series and Row Series .............................................................................................................229

Graph Colors and Color Link .................................................................................................................. 230

Spreadsheet Graph Window-Specific Menus and Buttons ....................................................................231

Graph Menu and Graph Examples .........................................................................................................232

Regression Graph Operations (Curve Fitting) ........................................................................................ 234

Other Graph Window Operations ........................................................................................................... 236

13-3 Statistical Calculations ......................................................................................................237

Single-variable, Paired-variable and Regression Calculations ...............................................................237

Test and Interval Calculations ................................................................................................................ 238

Distribution Calculations ......................................................................................................................... 240

About DispStat Command ...................................................................................................................... 241

13-4 Cell and List Calculations .................................................................................................. 241

Using the Cell Calculation Functions ......................................................................................................241

Using the List Calculation Functions ...................................................................................................... 242

Chapter 14: System Application ...................................................................................... 243

14-1 Managing Memory Usage ..................................................................................................243

Using the Storage Sheet ........................................................................................................................ 243

Using the Main Memory Sheet and eActivity Sheet ............................................................................... 244

8

14-2 Configuring System Settings ............................................................................................245

System Application Menus and Buttons ................................................................................................. 245

Configuring System Settings .................................................................................................................. 245

Chapter 15: Performing Data Communication ................................................................ 249

15-1 Data Communication Overview ......................................................................................... 249

Using the ClassPad Communication Application ................................................................................... 249

Select Connection Mode Dialog Box ...................................................................................................... 250

15-2 Performing Data Communication between the ClassPad and a Personal Computer ..250

Connecting and Disconnecting with a Computer in the USB Flash Mode .............................................251

Transferring Data between the ClassPad and a Personal Computer ....................................................252

Auto Import of VCP Files ........................................................................................................................ 253

Rules for ClassPad Files and Folders .................................................................................................... 253

VCP and XCP File Operations ............................................................................................................... 253

15-3 Performing Data Communication between Two ClassPads ........................................... 255

Connecting to Another ClassPad Unit .................................................................................................... 255

Transferring Data between Two ClassPads ........................................................................................... 255

Communication Standby ........................................................................................................................ 257

Interrupting an Ongoing Data Communication Operation ...................................................................... 257

15-4 Connecting the ClassPad to an EA-200 Data Analyzer ...................................................257

Connecting a ClassPad to a CASIO EA-200 Data Analyzer .................................................................. 257

15-5 Connecting the ClassPad to a Projector .......................................................................... 258

Projecting ClassPad Screen Contents from a Projector .........................................................................258

Precautions when Connecting................................................................................................................258

Appendix ............................................................................................................................ 259

Character Code Table .................................................................................................................. 259

System Variable Table ................................................................................................................. 263

Graph Types and Executable Functions.................................................................................... 266

Error and Warning Message Tables ........................................................................................... 267

Error Message Table ............................................................................................................................. 267

Warning Message Table ........................................................................................................................269

Low Memory Error Processing ............................................................................................................... 270

Resetting and Initializing the ClassPad ..................................................................................... 270

Number of Digits and Precision ................................................................................................. 271

Number of Digits.....................................................................................................................................271

Precision.................................................................................................................................................271

Display Brightness and Battery Life .......................................................................................... 272

Display Brightness..................................................................................................................................272

Battery Life ............................................................................................................................................. 272

Specifications ..............................................................................................................................272

About This User’s Guide

• The four digit boldface example numbers (such as 0201 ) that appear in Chapters 2 through 13 indicate
operation examples that can be found in the separate “Examples” booklet. You can use the “Examples”

booklet in conjunction with this manual by referring to the applicable example numbers.

• In this manual, cursor key operations are indicated as f, c, d, e (1-1 General Guide).

9

Chapter 1: Basics

This chapter provides a general overview of the ClassPad and application operations, as well as information
about input operations, the handling of data (variables and folders), file operations, and how to configure
application format settings.

1-1 General Guide

ClassPad at a Glance

3-pin data communication port

See Chapter 15 for details.

Touch screen

Icon panel

See “1-3 Built-in Application
Basic Operations”.

Cursor key*

k key

f key*

1

2

4-pin mini USB port

See Chapter 15 for details.

Stylus

K key

c key

Keypad

*1 In this manual, cursor key operations are indicated as f, c, d, e.

*2 Certain functions (cut, paste, undo, etc.) or key input operations can be assigned to key combinations that

consist of pressing the f key and a keypad key. For more information, see “14-2 Configuring System
Settings”.

Chapter 1: Basics  10

Turning Power On or Off

While the ClassPad is turned off, press c to turn it on.
To turn off the ClassPad, press f and then c.

Auto Power Off

The ClassPad also has an Auto Power Off feature. This feature automatically turns the ClassPad off when it is
idle for a specified amount of time. For details, see “To configure power properties” on page 246.

Note

Any temporary information in ClassPad RAM (graphs drawn on an application’s graph window, a dialog box
displayed, etc.) is retained for approximately 30 seconds whenever power is turned off manually or by Auto
Power Off. This means you will be able to restore the temporary information in RAM if you turn ClassPad back
on within about 30 seconds after it is turned off. After about 30 seconds, the temporary information in RAM is
cleared automatically, so turning ClassPad back on will display the startup screen of the application you were
using when you last turned it off, and the previous information in RAM will no longer be available.

1-2 Power Supply

Your ClassPad is powered by four AAA-size batteries LR03 (AM4), or four nickel-metal hydride batteries.

The battery level indicator is displayed in the status bar.

full medium low dead

Important!

• Be sure to replace batteries as soon as possible whenever the battery level indicator shows (low).

• Replace batteries immediately whenever the battery level indicator shows
not be able to perform data communication or other functions.

• For information about initial setup operations required after replacing batteries, see “Replacing Batteries and
Setting Up the ClassPad” in the separate Quick Start Guide.

• When battery power is very low, your ClassPad may not turn back on when you press its c key. If this
happens, immediately replace its batteries.

• The following message indicates that batteries are about to go dead. Replace batteries immediately whenever
this message appears.

If you try to continue using the ClassPad, it will automatically turn off. You will not be able to turn power back
on until you replace batteries.

• Be sure to replace batteries at least once a year, no matter how much you use the ClassPad during that time.

(dead). At this level, you will

Note: The batteries that come with the ClassPad discharge slightly during shipment and storage. Because of

this, they may require replacement sooner than the normal expected battery life.

Backing Up Data

ClassPad data can be converted to a VCP file or XCP file and transferred to a computer for storage. For details,
see “15-2 Performing Data Communication between the ClassPad and a Personal Computer”.

Chapter 1: Basics  11

1-3 Built-in Application Basic Operations

This section explains basic information and operations that are common to all of the built-in applications.

Using the Application Menu

Tapping m on the icon panel displays the application menu. You can perform the operations below with the
application menu.

Tap a button to start up an
application. See “Built-in
Applications” below.

Toggles the application
menu between page one
and page two.
The application menu page
can also be changed by
swiping the screen left or
right with the stylus or your
finger.

Tap here (or tap s on the icon panel) to display the
next menu.

VCP file operations.
See page 253.

Starts touch panel alignment.
See page 248.

Displays version information.
See page 248.

Built-in Applications

The table below shows the application icons displayed on the application menu, and explains what you can do
with each application.

Tap this
icon:

To start this
application:

To perform this type of operation:

• General calculations, including function calculations

Main

• Matrix calculations

• Computer Algebra System

eActivity

• Create an eActivity file that can be used for input of formulas, text,
and other ClassPad application data

• Create a list

Statistics

• Perform statistical calculations

• Draw a statistical graph

• Input data into a spreadsheet

Spreadsheet

• Manipulate and/or graph spreadsheet data

• Perform statistical calculations and/or draw a statistical graph

• Draw a graph

Graph & Table

• Register a function and create a table of solutions by substituting
different values for the function’s variables

Geometry

• Draw geometric figures

• Build animated figures

Conics • Draw the graph of a conics section

Differential Equation
Graph

• Draw vector fields and solution curves to explore differential equations

Chapter 1: Basics  12

Tap this
icon:

To start this
application:

Numeric Solver

Sequence

Financial

Program

E-Con EA-200

To perform this type of operation:

• Obtain the value of any variable in an equation, without transforming
or simplifying the equation

• Perform sequence calculations

• Solve recursion expressions

• Perform simple interest, compound interest, and other financial
calculations

• Input a program or run a program

• Create a user-defined function

• Control the optionally available EA-200 Data Analyzer
(See the separate E-CON EA-200 User’s Guide.)

Communication • Exchange data with another ClassPad, a computer, or another device

• Manage ClassPad memory (main memory, eActivity area, storage

System

area)

• Configure system settings

Tip: You can also start up the Main application by tapping M on the icon panel.

Application Window

The following shows the basic configuration of a built-in application window.

Menu bar

Tool bar

Upper window

Application window(s)

Soft keyboard

See page 15.

Status bar

See page 15.

Lower window

Many applications split the display between an upper window and a lower window, each of which shows
different information. When using two windows, the currently selected window (the one where you can perform
operations) is called the “active window”. The menu bar, toolbar, and status bar contents are all applicable to
the active window. The active window is indicated by a thick boundary around it.

You can perform the operations below on an Application window.

Chapter 1: Basics  13

To do this: Perform this operation:

Switch the active window While a dual window is on the display, tap anywhere inside the window that does

not have a thick boundary around it to make it the active window. Note that you
cannot switch the active window while an operation is being performed in the
current active window.

Resize the active window
so it fills the display

Swap the upper and
lower windows

Close the active windows

While a dual window is on the display, tap r. This causes the active window to
fill the display. To return to the dual window display, tap r again.

While a dual window is on the display, tap S. This causes the upper window
to become the lower window, and vice versa. Swapping windows does not have
any effect on their active status. If the upper window is active when you tap S
for example, that window will remain active after it becomes the lower window.

While a dual window is on the display, tap C at the top right corner of the
window to close the active window. This will cause the other (inactive) window to
fill the display.

Tip: When you tap the r icon while a dual window is on the display, the currently active window will fill the display, but

the other (inactive) window does not close. It remains open, hidden behind the active window. This means you can
tap S to bring the hidden window forward and make it the active window, and send the current active window to the
background.

u Changing the Display Orientation (Main Application Only)

While the Main application is running, tap g to switch to horizontal (landscape) display orientation. Horizontal
orientation helps when you are using formulas that are long. To return to vertical (portrait) display orientation,
tap g again.

Using the O Menu

The O menu appears at the top left of the window of each application, except for the System application. You
can access the O menu by tapping m on the icon panel, or by tapping the menu bar’s O menu.

The following describes all of the items that appear on the O menu.

1 Tapping [Variable Manager] starts up Variable Manager. See “Using

Variable Manager” (page 27) for details.

2 Tapping [View Window] displays a dialog box for configuring

the display range and other graph settings. For details, see the
explanations for the various applications with graphing capabilities
(Graph & Table, Differential Equation Graph, Statistics, etc.)

3 Tapping a menu selection displays a dialog box for configuring the

corresponding setup settings. See “1-7 Configuring Application Format
Settings” for details.

4 Tapping [Default Setup] returns all settings to their initial defaults

(except for the current folder setting). See “1-7 Configuring Application
Format Settings” for details.

5 Tapping [Window] displays a list of all of the windows that can be accessed from the current application

(Statistics application in this example). Tapping a menu selection displays the corresponding window and
makes it active.

6 Tap [Keyboard] to toggle display of the soft keyboard on or off.

7 Tapping [Close] closes the currently active window, except in the following cases.

• When only one window is on the display

• When the currently active window cannot be closed by the application being used

You cannot, for example, close the Graph Editor window from the Graph & Table application.

1
2

3

4
5
6
7

Chapter 1: Basics  14

Interpreting Status Bar Information

The status bar appears along the bottom of the window of each application.

123

1 Information about the currently running application

You can change the configuration of a setting indicated in the status bar by tapping it. Tapping “Cplx”
(indicating complex number calculations) while the Main application is running will toggle the setting to “Real”
(indicating real number calculations). Tapping again will toggle back to “Cplx”. For more details about the
current application information, see “1-7 Configuring Application Format Settings”.

2 This indicator rotates while processing in progress.

X appears here to indicate when an operation is paused.

3 Battery level indicator (See “1-2 Power Supply”.)

Pausing and Terminating an Operation

Many of the built-in applications provide operations to pause and terminate (break) expression processing,
graphing, and other operations.

u To pause an operation

Pressing the K key while an expression processing, graphing, or other operation is being performed
pauses the operation. X appears on the right side of the status bar to indicate when an operation is paused.
Pressing K again resumes the operation.

u To terminate an operation

Pressing the c key while an expression processing, graphing, or other
operation is being performed terminates the operation and displays a “Break”
dialog box like the one shown nearby.

Tap the [OK] button on the dialog box to exit the Break state.

1-4 Input

You can input data on the ClassPad using its keypad or by using the on-screen soft keyboard.

Virtually all data input required by your ClassPad can be performed using the soft keyboard. The keypad keys
are used for input of frequently used data like numbers, arithmetic operators, etc.

Using the Soft Keyboard

The soft keyboard is displayed in the lower part of the touch screen.

Chapter 1: Basics  15

u To display the soft keyboard

When the soft keyboard is not on the touch screen, press the
k key, or tap the O menu and then tap [Keyboard]. This
causes the soft keyboard to appear.

• The soft keyboard has a number of different key sets such
as [Math1], [abc], and [Catalog], which you can use to input
of functions and text. To select a key set, tap one of the tabs
along the left side of the soft keyboard.

• Pressing the k key or tapping the O menu, and then
[Keyboard] again hides the soft keyboard.

Soft keyboard

Soft Keyboard Key Sets

The soft keyboard has a variety of different key sets that support various data input needs. Each of the
available key sets is shown below.

[Math1], [Math2], [Math3], [Trig] (trigonometric), [Advance] key sets

These key sets include keys for inputting functions, operators, and symbols required for numerical formulas.

Math1 Math2 Math3

Trig Advance

For details above the above key sets, see “Using Math, Trig, and Advance Key Sets” (page 20).

[Var] (variable) key set

This key set includes only keys for the input of single-character variables. For
more information, see “Using Single-character Variables” (page 23).

Chapter 1: Basics  16

[abc] key set

Use this key set to input alphabetic characters. Tap one of the tabs along the
top of the keyboard (along the right when using horizontal display orientation)
to see additional characters, for example, tap [Math]. For more information, see
“Using the Alphabet Keyboard” (page 24).

[Catalog] key set

This key set provides a scrollable list that can be used to input built-in
functions, built-in commands, system variables, and user-defined functions.
Tap a command to select it and then tap it again to insert it. Selecting an item
from the Form list changes the available commands. For more information, see
“Using the Catalog Keyboard” (page 24).

[Number] key set

This key set provides the same keys as those on the keypad. Use this key set
when you want to use only the touch screen for input or in place of the keypad
while using horizontal (landscape) display orientation.

Input Basics

This section includes a number of examples that illustrate how to perform basic input procedures. All of the
procedures assume the following.

• The Main application is running. See “Built-in Applications” (page 12).

• The soft keyboard is displayed. See “Using the Soft Keyboard” (page 15).

kInputting a Calculation Expression

You can input a calculation expression just as it is written, and press the E key to execute it. The
ClassPad automatically determines the priority sequence of addition, subtraction, multiplication, division, and
parenthetical expressions.

Example: To simplify −2 + 3 − 4 + 10

u Using the keypad keys

cz2+3-4+10E

If the line where you want to input the calculation expression already
contains input, be sure to press

u Using the soft keyboard

Tap the keys of the [Number] keyboard to input the calculation expression.

c to clear it.

c4-c+d-e+baw

Chapter 1: Basics  17

As shown in the above Example, you can input simple arithmetic calculations using either the keypad keys
or the soft keyboard. Input using the soft keyboard is required to input higher level calculation expressions,
functions, variables, etc. See Chapter 2 for more information about inputting expressions.

Tip: In some cases, the input expression and output expression (result) may not fit in

the display area. If this happens, tap the left or right arrows that appear on the
display to scroll the expression screen and view the part that does not fit.

You can also change the display orientation to horizontal

(landscape) for easier-to-read display of long input formulas
and calculation results. See “Changing the Display
Orientation (Main Application Only)” (page 14).

kEditing Input

u To delete a single character

Move the cursor so it is directly to the right of the character you want to delete, and then press K. Each
press of K deletes one character to the left of the cursor.

Example: To change the expression 369 × × 2 to 369 × 2

1. c369**2

2. dK

After you make all of the changes you want, press E to calculate the result. To add more characters to the
calculation, press e to move the cursor to the end of the calculation, and input what you want.

Tip: You can move the cursor without using the cursor key by tapping at the destination with the stylus. This causes the

cursor to jump to the location where you tap.

u To insert new input into the middle of an existing calculation expression

Use d or e to move the cursor to the location where you want to insert new input, and then input what you
want.

2

Example: To change 30

to sin(30)2 (For input, use the keypad and the [Math1] soft keyboard set.)

1. c30x

2. dddds

3. ee)

u To replace a range of input with new input

After you drag the stylus across the range of input that you want to replace, enter the new input.

Example: To change “1234567” to “10567”

1. c1234567

2. Drag the stylus across “234” to select it.

3. 0

Chapter 1: Basics  18

k Using the Clipboard for Copy and Paste

You can copy (or cut) a function, command, or other input to the ClassPad’s clipboard, and then paste the
clipboard contents at another location. Performing a copy or cut operation causes the current clipboard
contents to be replaced by the newly copied or cut characters.

u To copy characters

1. Drag the stylus across the characters you want to copy to select them.

2. On the soft keyboard, tap p. Or tap the [Edit] menu and then tap [Copy].

• This puts a copy of the selected characters onto the clipboard.

u To cut characters

1. Drag the stylus across the characters you want to cut to select them.

2. Tap the [Edit] menu and then tap [Cut].

• This causes the selected characters to be deleted, and moves them onto the clipboard.

u To paste the clipboard contents

1. Move the cursor to the location where you want to paste the clipboard contents.

2. On the soft keyboard, tap q. Or tap the [Edit] menu and then tap [Paste].

• This pastes the clipboard contents at the current cursor location.

Tip: The clipboard contents remain on the clipboard after you paste them. This means you can paste the current contents

as many times as you like.

Copying and pasting in the message box

The “message box” is a 1-line input and display area under the Graph window
(see Chapter 3).

You can use the two buttons to the right of the message box to copy the
message box contents (p button), or to paste the clipboard contents to the
message box (q button). Copy and paste are performed the same way as the
copy and paste operations using the soft keyboard.

Message box

kCopying with Drag and Drop

You can also copy a string of text by simply selecting it and then dragging it to another location that allows text
input.

Example 1: To use the Main application to perform the calculation 15 + 6 × 2, edit to (15 + 6) × 2, and then

re-calculate

1. In the Main application work area, perform the calculation below.

c15+6*2E

2. Drag across the 15 + 6 × 2 expression to select it, and then drag the

expression to the .

• This will copy 15 + 6 × 2 to the location where you dropped it.

3. Add parentheses before and after 15 + 6 and then press E.

Tip: You can use drag and drop to copy both input formulas and calculation results.

Chapter 1: Basics  19

Example 2: To copy an expression you input with the Main application to the Graph Editor window

1. In the Main application work area, input: 2

x^2 + 2x − 1.

c2x{2+2x-1E

2. On the right end of the toolbar, tap the down arrow button. On the button

palette that appears, tap !.

• This will display the Graph Editor window in the bottom half of the screen.

3. Select the 2

x^2 + 2x − 1 expression you input with the Main application by

dragging across it, and then drag the expression to the located to the right
of y1: on the Graph Editor window.

• This will copy 2

x^2 + 2x − 1 to the location where you dropped it.

Tip

• An expression you copy using the operation above is registered to the Graph Editor
window of the Graph & Table application. For information about Graph Editor window
operations, see Chapter 3.

• Depending on the destination to which you drag a character string or an expression,
the drop operation may cause it to be converted automatically to a graph or a
figure. For example, dropping the expression in Example 2 into the Graph window will graph the expression. Refer to the
locations provided below to see examples using drag and drop.

- “2-9 Using the Main Application in Combination with Other Applications” (Chapter 2, page 89)

- “5-4 Graphing an Expression or Value by Dropping It into the Differential Equation Graph Window” (Chapter 5, page 124)

- “8-5 Using the Geometry Application with Other Applications” (Chapter 8, page 170)

- “13-1 Inputting and Editing Cell Contents” (Chapter 13, page 221), “13-2 Graphing” (Chapter 13, page 229)

Various Soft Keyboard Operations

This section explains how to use each of the soft keyboard key sets. For information about key set types and a
general overview of key sets, see “Soft Keyboard Key Sets” (page 16). All of the examples in this section assume
the following conditions.

• The Main application is running. See “Built-in Applications” (page 12).

• The soft keyboard is displayed. See “Using the Soft Keyboard” (page 15).

k Using Math, Trig, and Advance Key Sets

The [Math1], [Math2], [Math3], [Trig] (trigonometric), and [Advance] key sets
contain keys for inputting numeric expressions.

The L key in the upper left corner and all of the keys in the bottom row are
common to all key sets. Their functions are described below.

L Switches between template input and line input. See “Template Input

and Line Input” (page 22).

h Performs the same operation as the keypad’s K key. Deletes the

character to the left of the current cursor position.

pq See “Using the Clipboard for Copy and Paste” (page 19).

D Inputs “ans”. See “Using the Answer Variable (ans)” (page 43).
w Performs the same operation as the keypad’s E key, which executes calculations.

Chapter 1: Basics  20

The keys in the following table are found on different key sets and are used to input functions and commands
for performing particular calculations and operations.

Key set Key Description

Math1, Math2,
Math3, Trig

Math1, Math2,
Trig

Math1, Math2

Math1, Math2

Math1, Math3

Math1, Math3

Math1, Math3

Math1, Trig

Math1

Math1

N5

p

W

m

sct

QI

4

.

(

)

*R

V"%

wE

“Template Input and Line Input” (page 22), “Other Functions”
(page 48)

Inputs pi (π).

Inputs the substitution symbol (⇒). “Creating a New Variable”
(page 31)

“Logarithmic Functions and Exponential Functions” (page 47)

“Trigonometric and Inverse Trigonometric Functions” (page 47)

“Logarithmic Functions and Exponential Functions” (page 47)

Inputs the absolute value symbol (| |) or function (abs().

“solve [Action][Equation/Inequality][solve]” (page 79)

Inputs parentheses (( )).

Inputs brackets ({ }). “2-4 List Calculations” (page 55)

r

“Angle Conversion (°,

)” (page 46)

“Logarithmic Functions and Exponential Functions” (page 47)

“Other Functions” (page 48)

Math1

Math1

Math1

Math2, Math3,
Trig

Math2, Trig

Math2, Trig

Math2

Math2

Math3

Math3

Math3

Math3

/

a

#

i

e

8

[

`*7
]_)

678

d

fg

'

+

“dms [Action][Transformation][DMS][dms]” (page 62)

“toDMS [Action][Transformation][DMS][toDMS]” (page 62)

“solve [Action][Equation/Inequality][solve]” (page 79)

Inputs the imaginary unit (

i).

Inputs the infinity symbol (∞).

θ

Inputs the

Inputs the single-character variable (page 23)

variable.

t.

“Using the Calculation Submenu” (page 65)

“2-5 Matrix and Vector Calculations” (page 56)

“To create a user-defined function using the Define command”
(page 196)

Inputs the “f” of f(

x), or the “g” of g(x).

“Derivative Symbol (’)” (page 52)

“dSolve [Action][Equation/Inequality][dSolve]” (page 80)

Math3

Math3

1

U

“piecewise Function” (page 52)

“with Operator ( | )” (page 53)

Chapter 1: Basics  21

Key set Key Description

Math3

Math3

Math3

Trig

Trig

Advance

Advance

Advance

Advance

Advance

Advance

Advance

[

<>;:=/

~

SCT

123

!@#

:!

PN

NM<

hin

r

5%(^

7

6

Inputs square brackets ([ ]). “2-5 Matrix and Vector Calculations”
(page 56)

“Equal Symbols and Unequal Symbols” (page 53)

“Angle Symbol (∠)” (page 52)

“Trigonometric and Inverse Trigonometric Functions” (page 47)

“Hyperbolic and Inverse Hyperbolic Functions” (page 47)

“Other Functions” (page 48)

“Permutation (

“Chapter 6: Sequence Application”

“About rSolve” (page 127)

“Using the Advanced Submenu” (page 62)

“Gamma Function” (page 55)

“Dirac Delta Function” (page 54)

nPr) and Combination (nCr)” (page 51)

Advance

Advance

l

'

nth Delta Function” (page 54)

“

“Heaviside Unit Step Function” (page 54)

k Template Input and Line Input

ClassPad supports two different input methods: template input and line input. Template input lets you input
fractions, powers, and other functions using formats that are the same as those in textbooks. Line input uses a
linear format for inputting expressions.

2

2'2

2+

( )

'

Template Input Line Input



2+ 1

2+ (2 (2) / ( (2) + 1))^2

u Switching between Template Input and Line Input

Tap the L key. Each toggles the key color between white (L) and light blue ( ).
A white key indicates the template input mode, while a light blue key indicates the line input mode.



In the template input mode, you can perform template input using keys with
such as N and !. Other keys input the same functions or commands as they do in the line mode.

2

2'2

Example 1: To use the template input mode to input

1. Tap the [Math1] tab and then enter the template input mode (white L key).

2+

( )

'



2+ 1

or  marked on their key tops,

2. Perform the key operation below:

2+(N2!2c!2e+1
eem2E

Chapter 1: Basics  22

Example 2: To use the line input mode to input the same expression as in Example 1

∫

∫

(

2+ (2 (2) / ( (2) + 1))^2

)

1. Tap the [Math1] tab and then enter the line input mode (light blue

key).

2. Perform the key operation below:

2+(d2!2)N
(!2)+1)ewE



Example 3: To use the template input mode to input

Y



()

1. Tap the [Math2] tab and then enter the template input mode (white L key).

2. Perform the key operation below:

Oxe1f10exE

Example 4: To use the template input mode to input

1

(1 − 2)

∫

0





1. Tap the [Math2] tab and then enter the template input mode (white L key).

2. Perform the key operation below:

7(1-xm2e)Qxeex

3. Tap the upper right input box of

right input box of

and then press 0.

and then press 1. Next, tap the lower

4. To execute the calculation, press E.

Tip: For information about the contents and input formats of the functions in Example 3 and Example 4, see “2-7 Using

the Action Menu” (page 59).

k Using Single-character Variables

As its name suggests, a single-character variable is a variable name that consists of a single character like
“a” or “x”. Input of single-character variable names is subject to different rules than input of a series of multiple
characters (like “abc”).

u To input a single-character variable name

Any character you input using any one of the following techniques is always treated as a single-character
variable.

• Tapping any key in the [Var] (variable) key set (page 16)

• Tapping the X, Y, or Z key of the [Number] key set

• Tapping the [ key of the [Math2] key set

• Pressing the x, y, or Z keypad key

If you use the above key operations to input a series of characters, each one is treated as a single-character
variable. Inputting A, B, C using the [Var] key set, for example, is treated as the mathematical expression

a × b × c, and not as the characters “abc”.

Tip: The single-character variables described above make it possible for you to perform calculations as they appear in

your textbook.

Example 1: ABCw

Chapter 1: Basics  23

Example 2: 2xyE

Tip: When you input a single-character variable, its name appears on the display as an italicized character. This is simply

to let you know that the letter is a single-character variable name.

u To input a series of multiple characters

A series of multiple characters (like “list1”) can be used for variable names, program commands, comment text,
etc. Always use the [abc] key set when you want to input a series of characters.

Example: abcE

You can also use the [abc] key set to input single-character variable names. To do so, simply input a single
character, or follow a single character with a mathematical operator.

Example: a*b+cE

Tip: A single-character variable you input using the [abc] key set is identical to a single-character variable you input using

the [Var] key set.

k Using the Alphabet Keyboard

Tap the [abc] tab to the left of the soft keyboard to display the alphabet
keyboard [abc] key set. In addition to the [abc] key set, you can also select
from among three other key sets named [αβγ] (character symbols), [Math]
(mathematics symbols), and [Symbol] (extra symbols).

Use the tabs above the alphabet keyboard (to the right of the keyboard when
using horizontal screen orientation) to select a key set. To return to the [Math1]
key set from the alphabet keyboard, tap the I key in the lower left corner.

k Using the Catalog Keyboard

The “Form” menu of the catalog keyboard lets you select one of the five categories described below.

Func ........ built-in functions (pages 46 and 59)

Cmd ........ built-in commands and operators (page 199)

Sys .......... system variables (page 263)

User ........ user-defined functions (page 196)

All ............ all commands, functions, etc.

After selecting a category, you can choose the item you want from the alphabetized list that appears on the
catalog keyboard.

Tip: Note that user-defined variables and user-defined programs cannot be input using the catalog keyboard. Use

Variable Manager (page 27) instead.

Chapter 1: Basics  24

Catalog keyboard configuration

Tapping a letter button displays the
commands, functions, or other items that
begin with that letter.

This is an alphabetized list of commands,
functions, and other items available in the
category currently selected with “Form”.

Tap the down arrow button and then
select the category you want ([Func],
[Cmd], [Sys], [User], or [All]) from the list
that appears.

Tap this key to input the item that is
currently selected in the alphabetized list.

u To use the catalog keyboard

Example: To input the built-in command “Plot”

1. On the catalog keyboard, tap the “Form” down arrow button and then select [Cmd] from the list of categories

that appears.

2. Tap the + button in the upper right corner until the P button is visible.

3. Tap P.

4. In the alphabetized list, tap “Plot” and then tap [INPUT] to input the command.

• Instead of tapping [INPUT], you could also tap the command a second time to input the command.

1-5 ClassPad Data

This section provides information about the various types of data that can be stored in ClassPad memory, and
the location where each type of data is stored. It also explains how to use Variable Manager, which is a tool for
managing stored data, as well as file operations (file save, recall, delete, rename, etc.) that are common to a
number of different applications.

Data Types and Storage Locations (Memory Areas)

ClassPad uses a “main memory” memory area to store various types of data.

Examples:

• Executing “10⇒
causes variable x to be stored in main memory as “EXPR” (expression) type data.

• Creating a user-defined function (page 196) causes the function to be stored in main memory as “FUNC”
(function) type data.

• Saving a spreadsheet to a file (by executing [File] - [Save] with the Spreadsheet application) saves the file in
main memory as “MEM” (memory) type data.

An eActivity file created with the eActivity is stored in a separate eActivity memory area in order to keep it
separate from other application data.

Accessing Data

Besides the application that originally created it, data in main memory can also be accessed by any other
application. It can also be deleted, renamed, copied, moved and otherwise accessed using Variable Manager
(page 27). eActivity files can be accessed from the eActivity application only.

x” (which assigns a value of 10 to variable x) in the Main application or eActivity application

Chapter 1: Basics  25

Main Memory Data Types

Data stored in main memory has a data type attribute that is assigned in accordance with the application that
created the data and the actual content of the data. The data type is indicated by a data type name. Data type
names are shown on the Variable Manager variable list, and on the Select Data dialog box that appears when
you are specifying a variable in any ClassPad application. The following table lists all of the data type names
and explains the meaning of each.

Data Type Name Data Type

EXPR Real number, complex number or expression data

STR String data

LIST List data created using the Statistics application, Main application, etc.

MAT Matrix data created using the Main application, etc.

PRGM* General program

EXE* Edit prohibited program

TEXT* Text data

FUNC* User-defined function

GMEM* Graph memory data saved using the Graph & Table application

For more information, see “Saving Graph Editor Data to Graph Memory” (page 100).

GEO* Geometry application data

MEM* Data saved to a file using one of the following applications: Spreadsheet, Geometry,

Verify (page 92), Probability (page 92).

OTHR Data other than that described above

Protected variable types

Some data types are protected. A variable whose data type is protected cannot be overwritten with another
variable, which protects variable contents from being inadvertently altered. Data types whose names are
marked with an asterisk in the above table are protected. Note that whether or not a data type is protected is
determined by the system. You cannot change the protection status of a data type.

Tip: Even when a variable is a protected data type, you can rename, delete, or move it. To disable these operations, you

need to lock the variable. See “Variable Manager operations” on page 27.

Main Memory Folders

Your ClassPad stores data in one of the following types of folders described below.

“main” folder: The “main” folder is a ClassPad reserved folder, and acts as the default current folder (see
“Current Folder” below).

“library” folder: Also a ClassPad reserved folder, the “library” folder can be used for storing user-created data
(variables, programs, user functions, etc.). Data stored in the “library” folder can be accessed without specifying
a path, regardless of the current folder setting.

User folder: This is a folder created and named by you. You can make a user folder the current folder, move
data to a user folder, etc. You can also delete and rename a user folder as required. You can have up to 87
user folders in main memory at one time.

Tip: You cannot put a folder inside of another folder.

Current Folder

The current folder is the folder where the data (excluding eActivity files) created by applications are stored
and from which such data can be accessed. The initial default current folder is the “main” folder. You can also
select a user folder you created as the current folder. For more information about how to do this, see “Variable
Manager operations” on page 27.

Chapter 1: Basics  26

Using Variable Manager

Variable Manager is a tool for managing user variables, programs, user functions, and other types of data.
Though this section uses only the term “variables”, the explanations provided here also refer to the other types
of data that can be managed by Variable Manager.

With Variable Manager you can:

• Create, delete, rename, lock, and unlock folders, and configure current folder settings.

• Delete, copy, rename, move, lock, unlock, search for variables, and view the contents of variables.

About Variable Types

A variable with a letter name like x and y can be a user-created user variable, a system variable, or a local
variable.

• System variables are pre-defined reserved variables, and cannot be renamed. For the names of and detailed
information about system variables, see the “System Variable Table” on page 263.

• A local variable is a variable that is temporarily created by a defining function, program, or other operation for
a particular purpose. For more information about local variables, see the “Local” command under the “12-4
Program Command Reference”.

u To start up Variable Manager

1. While any application (except for the System

application) is running, tap O and then tap
[Variable Manager].

• This displays the folder list. The folder list
always appears first whenever you start up
Variable Manager.

Folder name

Number of variables
contained in the folder

Folder list

2. Tap a folder name twice to open the folder
contents; a variable list.

Folder name

Variable name

• To close the variable list and return to the

Number of variables
contained in the folder

Data types (page 26) and
sizes (bytes)

folder list, tap [Close].

Variable list

3. To exit Variable Manager, tap [Close] on the folder list.

u Variable Manager operations

The operations described in the table below can be performed while Variable Manager is displayed.

To do this: Do this:

Specify the current folder On the folder list, tap the [Current] down arrow button. On the list that appears,

select the folder that you want to specify as the current folder.

Create a folder On the folder list, tap [Edit] - [Create Folder]. On the dialog box that appears,

enter the name you want to assign to the folder and then tap [OK].

Open a folder On the folder list, tap the name of the folder you want to open so it is

highlighted, and then tap it again.

Open the “library” folder Tap [View] and then [“library” Folder]. This opens the “library” folder and

displays a variable list showing its contents.

Select a folder or variable Select the check box next to the folder or variable name. To select all the

folders or variables in the list, tap [All] and then [Select All].

Chapter 1: Basics  27

To do this: Do this:

Deselect a folder or
variable

Delete a folder See “To delete a folder” (page 29).

Delete a variable Select the check box next to the variable you want to delete, and then tap [Edit]

Rename a folder or
variable

Lock a folder or variable Select the check box next to the folder or variable you want to lock, and then

Unlock a folder or variable Select the check box next to the folder or variable you want to unlock, and then

Display a list of a
particular type of variable

Copy or move a variable On the variable list, tap [Edit] and then [Copy] or [Move]. On the dialog box that

Clear the check box next to the folder or variable name. To deselect all the
folders or variables in the list, tap [All] and then [Deselect All].

- [Delete]. In response to the confirmation dialog box that appears, tap [OK] to
delete the selected variable.

Highlight the folder or variable you want to rename and then tap [File] ­[Rename]. On the dialog box that appears, enter the name you want to assign
to it and then tap [OK].

tap [Edit] - [Lock]. This locks the currently selected folder or variable, and adds
a b icon to the left of its name to indicate that it is locked.

tap [Edit] - [Unlock].

On the variable list, tap [View] - [Variable Type]. On the dialog box that appears,
tap the down arrow button and then select the data type from the list that
appears and then tap [OK].

appears, tap the down arrow button and then select the destination folder from
the list that appears and then tap [OK].

Tip

• If a variable with the same name already exists in the destination folder, the variable in
the destination folder is replaced with the one that you are copying or moving.

• A variable that is locked cannot be moved.

View the contents of a
variable

Input a folder name or
variable name into an
application

Search for a variable On the folder list, tap [Search]. On the dialog box that appears, enter the

On the variable list, tap the name of the variable whose contents you want to
view so it is highlighted, and then tap it again. This displays a dialog box that
shows the contents of the variable.

See “To input a folder name or variable name into an application” (page 29).

variable name you want to find and then tap [OK].
An exclamation point (!) appears in front of all folders containing a variable
name that matches the name in your search.

Note: You can use the above procedure to search the “main” folder or a user

defined folder for a particular variable name. Note that you cannot search the
“library” folder.

Selecting a Folder

• If no check box is selected on the folder list, any folder operation that is performed affects the folder whose
name is currently highlighted on the list. If any folder check box is selected, only that folder is affected by a
folder operation, and the folder whose name is highlighted on the list is not affected.

• Selecting the check box of a folder causes the check boxes of all of the variables inside of it also to become
selected.

• When renaming a folder, only the folder whose name is highlighted on the folder list is renamed. Other folders
whose check boxes are selected are not affected.

Chapter 1: Basics  28

Selecting a Variable

• If no check box is selected on the variable list, any variable operation that is performed affects the variable
whose name is currently highlighted on the list. If any variable check box is selected, only that variable is
affected by a variable operation, and the variable whose name is highlighted on the list is not affected.

• When renaming a variable, only the variable whose name is highlighted on the variable list is renamed. If
other variables are selected (checked), they will not be affected.

Folder and Variable Name Rules

The following are the rules that apply to folder and variable names.

• Folder or variable names can be up to 8 bytes long.

• The following characters are allowed in a folder or variable name: Upper-case and lower-case characters,
subscript characters, numbers, underscore (_).

• Folder or variable names are case-sensitive. For example, each of the following is treated as a different
folder/variable name: abc, Abc, aBc, ABC.

• A reserved word (system variable names, built-in function names, command names, etc.) cannot be used as
a folder or variable name.

• A number, subscript characters or the underscore (_) cannot be used as the first character of a folder or
variable name.

u To delete a folder

Important!

Before deleting a folder, make sure you no longer need any of the variables contained inside it. It is probably
a good idea to first delete the variables you don’t need, move the variables you do need to another folder, and
then delete the empty folder.

1. Open the folder you want to delete and check its contents.

• Make sure you no longer need any of the variables in the folder. If any of the variables are locked, unlock
them.

• After checking the contents of the folder, close it to return to the folder list.

2. Select the check box next to the folder you want to delete.

• You can select and delete multiple folders, if you want.

3. On the folder list, tap [Edit] and then [Delete].

4. In response to the confirmation dialog box that appears, tap [OK] to delete the folder.

Tip: You cannot delete the “library” folder or the “main” folder.

u To input a folder name or variable name into an application

1. In the Main application, Graph & Table application, or some other application, move the cursor to the location
where you want to input the variable name.

2. Start up Variable Manager to display the folder list.

3. If you want to input a variable name, double-tap the folder that includes the variable whose name you want to
input. If you want to input a folder name, advance to the next step.

4. Tap the folder or variable whose name you want to input, so its name is highlighted.

5. Tap [INPUT].

• This exits Variable Manager and inputs the name of the folder or variable you selected in step 4 into the

application at the current cursor position.

Chapter 1: Basics  29

Managing Application Files

The applications below can save data to files.

Geometry (Chapter 8), eActivity (Chapter 10), Spreadsheet (Chapter 13), Verify (page 92), Probability (page 92)

This section explains the common operations that can be performed on data files created with these
applications.

Tip: The eActivity file save dialog box is slightly different from the save dialog box of the other applications, but operations

are basically the same.

u To save a file

1. Tap [File] and then [Save].

2. On the dialog box that appears, tap the name of the folder where you want to save the file so it is selected.

3. Input up to 8 bytes for the file name in the file name edit box, and then tap [Save].

u To open an existing file

1. Tap [File] and then [Open].

2. On the dialog box that appears, open the folder that contains the file you want to open.

3. Tap the name of the file you want to open so it is selected, and then tap [Open].

u To search for a file

1. Tap [File] and then [Open].

2. On the dialog box that appears, tap [Search]. This displays the Search dialog box.

3. Enter the file name you want to find and then tap [Search].

• File names that match the one you enter become highlighted on the display. Tapping [Open] opens the

highlighted file.

• To search for the next occurrence of the file name, tap [Search] again and then tap [Next] on the Search

dialog box.

u To delete a folder or file

Important!

Deleting a folder also deletes all files inside of it. Please double-check to make sure you no longer need the
contents of a folder before deleting it.

1. Tap [File] and then [Open].

2. On the dialog box that appears, select the check box next to the folder or file you want to delete.

• You can select multiple folders/files for deletion, if you want.

• Selecting a check box next to a folder name automatically checks the boxes for all files inside that folder.

3. Tap [File] and then [Delete].

4. In response to the confirmation dialog box that appears, tap [OK] to delete the folder(s) or file(s).

Tip: Selecting a folder in the above procedure deletes the folder and all of its contents. Note, however, that the “main”

folder cannot be deleted, even if you check it.

u To rename a folder or file

1. Tap [File] and then [Open].

2. On the dialog box that appears, tap the name of the folder or file you want to rename so it is selected.

3. Tap [File] and then [Rename]. This displays the Rename dialog box.

4. Enter the name you want to assign to it and then tap [OK].

Chapter 1: Basics  30