Texas Instruments CBL 2 User Manual
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Getting Started

with the

TI-73Explorer™,

CBL 2™, and CBR™

CL3456

Important Information

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Texas Instruments Incorporated

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Attention: Manager, Business Services

© 2003 Texas Instruments Incorporated. Except for the specific rights granted herein, all rights are reserved.

Windows, Macintosh are the trademarks of their respective owners. Printed in the United States of America.

Contents

 

Important Information ........................................................................

2

Contents ............................................................................................

3

TI-73 Explorer™ keys .......................................................................

4

Turning on and turning off the TI-73 Explorer™ ...............................

5

Home screen .....................................................................................

6

Entering text -t ......................................................................

8

Clear :and Quit-l..........................................................

9

Using subtraction Tand negation akeys .....................................

10

Keyboard math applications ............................................................

11

Integer division -Œ.................................................................

12

Percent C.......................................................................................

12

Square 6 .......................................................................................

13

Square root -z .........................................................................

14

Pi -„ .........................................................................................

14

Fractions .........................................................................................

15

Constants with counter-creating number patterns ..........................

17

Scrolling on the Home screen .........................................................

18

Using parentheses DE..................................................................

19

TI-73 Explorer™ menus ..................................................................

20

Changing mode settings .................................................................

23

Creating lists and statistical plots ....................................................

24

Graphing a line ................................................................................

27

Error messages ...............................................................................

28

MEMORY menu -Ÿ ...............................................................

30

Installing handheld software applications .......................................

33

Running software applications ........................................................

35

Collecting data using the CBL™/CBR™ App .................................

36

Collecting data using the CBL 2é ...................................................

37

© 2003 Texas Instruments Incorporated.

TI-73Explorerkeys

-

Accesses the secondary functions of keys (shown in yellow above keys).

^

Turns on the TI-73Explorer.

$"#!

Let you move the cursor in four directions on the screen.

:

Erases entries and answers on the Home screen and entry line.

9

Lists the applications installed on your TI-73Explorer.

b

Evaluates an expression, executes an instruction, and selects a menu item.

4

© 2003 Texas Instruments Incorporated.

Turning on and turning off the TI-73Explorer

To turn on the TI-73Explorer, press ^located at the lower left corner of the device.

To turn off the TI-73Explorer, press-,and then the ^key. The next time you turn on theTI-73Explorer, the Home screen appears with the same settings and memory contents retained.

Automatic Power Down™

The Automatic Power Down™ (APD™) feature prolongs battery life by turning off the TI-73Explorer automatically after five inactive minutes.

When you turn on following APD, the handheld device displays the same information displayed before APD, retaining the same cursor position, settings, memory contents, and any error conditions.

Note: Avoid depleting your batteries by turning off yourTI-73Explorer when not in use.

Adjusting the display contrast

Display brightness and contrast depend on factors such as room lighting, battery freshness, and viewing angle. To adjust the contrast:

1.Press and release -.

2.To darken the screen, press and hold $.

— or —

To lighten the screen, press and hold #.

Note: The flashing cursor (Ù) changes to Ûwhen you press the-key.

As you adjust the setting, a number from 0 (lightest) to 9 (darkest) appears at the upper right corner of the screen.

Note: If the contrast setting is too light or dark, the number will not be viewable.

© 2003 Texas Instruments Incorporated.

5

Home screen

The first time you turn on your TI-73Explorer™, this screen appears:

Operating system version

Note: Download the latest operating system (OS) to your Internetenabled computer using theTI-ConnectivityKit. Both the latest OS and TI Connectivity Kit are available ateducation.ti.com/shop.

To clear the screen, press :twice. A blank screen with a flashing cursor appears called the Home screen. You can use the Home screen to enter problems and view results.

Home screen

Note: If you press :and do not see a blank Home screen, first press-,and then press .to select l.

Example: Add 2 + 3 on the Home screen.

Press

Result

2 \3

b

6

© 2003 Texas Instruments Incorporated.

Example: Multiply 5 x 4.

Press

Result

5 M4

b

Entering secondary functions -

Secondary functions are printed in yellow above the keys. To select a secondary function, first press the yellow -key,and then press a key with a secondary function.

For example, to view the CATALOG menu, press -|.

Note: The flashing cursor (Ù) changes to Ûwhen you press the-key.

© 2003 Texas Instruments Incorporated.

7

Entering text -t

You can use the Text Editor to key in text, such as alphabetic characters, braces, quotation marks, spaces, and relations.

To access the Text Editor, press -t.

To return to the Home screen from the Text Editor:

Select Done in the Text Editor and press b.

— or —

To cancel the operation, press -l.

Example: InsertR on the Home screen.

Press

Result

-tR b

Note: To selectR, press !, ", #and $as needed.R is pasted to the entry line.

###

(to select Done)

b

8

© 2003 Texas Instruments Incorporated.

Clear :and Quit-l

Clear :

The :key is located just below the four cursor keys at the upper right corner of the keyboard.

Pressing :while entering information clears the entry line.

Pressing :when the cursor is on a blank line clears the Home screen.

Note: Although it does not affect calculations, consider clearing the Home screen before beginning a new problem. We recommend that you press :each time you begin a new example in this guide to ensure that the screen you see matches the one in the example.

Quit -l

If you want to return to the Home screen after pressing a menu key, press

-l.

Note: To return to the Home screen and clear it, press-l:.

© 2003 Texas Instruments Incorporated.

9

Using subtraction Tand negationakeys

Use Tto enter subtraction operations.

Use ato enter a negative number in an operation, expression, or on a setup screen.

Note: TheTI-73Explorer™ subtraction and negation symbols appear slightly different to make them easier to distinguish. The negative symbol is raised and slightly shorter.

Example: Subtract 10 from 25.

Press

Result

2 5 T1 0

b

Example: Subtract L10 from 25.

Press

Result

2 5 Ta1 0

b

Example: Subtract L5 from 25.

Press

Result

 

 

2 5 TT5

 

b

 

Note: If you use the

 

subtraction key instead of

 

the negation key, an error

 

message will appear. (See

 

“Error messages” on

 

page 28.)

 

 

 

10

© 2003 Texas Instruments Incorporated.