SHARP EL-9400 service manual
Graphing Calculator
EL-9400
TEACHERS’ GUIDE
Built-in slide shows
Educational tools
(OHP/PC-link/Data collection)
Shift/Change function
Equation editor
Split display
Large display
Rapid graph
Rapid window
Rapid zoom
Easy to Teach
Easy to Learn
Easy to Use
I
ntroduction
Contents
Sales points P 1
Basic operation P 2
Equation editor P 4
Features
Shift P 5
Change P 6
Slide show P 7
Slide show selections P 8
Graphing procedure P 10
Rapid graph P 11
Rapid window P 12
Rapid zoom P 13
System options
PC-link system P 14
Set to set communication P 15
OHP system P 16
Menu tree 1~6 P 17
Specifications P 23
The EL-9400 was developed to meet the needs of an expanding
education market and is based on three concepts: easy to teach,
easy to learn and easy to use. The EL-9400 has been designed
with simplified operations and time-saving features, allowing
teachers to concentrate on actual teaching.
This manual was designed to introduce teachers to the unique
features of the EL-9400 using detailed operation examples.
Sales points
Graph Shift/Change shows
how "changing" the graph
affects the equation
Large 96 x 64-dot
display
Slide Shows reduce class
preparation time
Rapid zoom allows easy
adjustment of window size
Rapid graph/Rapid window
simplify graphing procedures
1
3
Equation Editor shows
equations just as in textbooks
2
4
5
6
EL-9400 Graphing Calculator
1
EL-9400 Graphing Calculator
Y =
EZ
CL
QUIT
CL
Basic operation
Power ON/OFF
○○○○○○○
○○○○○○
Power on
○○○
Power off
Erase equations and
remove error displays
○○○
Cancel of previous
function (Escape)
Names of parts
Function keys
Use to enter equations
Use to draw graphs
Use to view table of function value
Use to set size of viewing window
Use to adjust the viewing range
Use to trace graphs
Use to enter calculation mode
Use to enter slide show mode
Use to operate Rapid Graph/Rapid
Window and Rapid Zoom functions
1
Graphing keys
2
Power supply ON/OFF key
3
Alphabet specification key
4
Secondary function
specification key
5
Display screen
Cursor movement keys
6
Clear/Quit key
7
8
Variable enter key
9
Calculation execute key
Communication port for peripheral devices
10
2
EL-9400 Graphing Calculator
SET UP
Basic operation
Guide to key use
Press to use secondary functions (in yellow).
Press to use the alphabet keys (in blue).
Example:
To select “sin”:
To select “sin-1”:
To select A:
Adjusting screen contrast
• The contrast adjust screen will appear
when pressing
SET UP menu
• Contents displayed on the right side of
Reset function
1) When trouble occurs
Press to enter the reset mode.
Press
the screen are the current settings.
]
There may be differences in the results
of calculations and graph plotting
depending on the SET UP settings.
.
]
.
Press to lighten contrast.
Press to darken contrast.
• Use this function (1 or 2 ) to return all
settings to the default value or to delete all
data.
2) All RESET operation
• If trouble still occurs, proceed as follows:
1. Press the RESET switch on the back.
2. Press .
• Returns to the initial display.
CAUTION
Do not press CL in step 2. It will delete all data
stored in the calculator.
3
EL-9400 Graphing Calculator
CL
0
1
a/b2a/b
1
x
2
X/T
X/T
Equation editor
The equation editor allows equations to be viewed just as they are written in textbooks. This
increases student comprehension and allows mistakes to be found quickly.
Example
Input the equation and see how it can be easily
viewed with the equation editor.
1
2
3
4
(or 6 )
Display
NotesKey Operation
Clear the display.
Select CALC and
(Integral function)
Enter the range of the integral.
Enter
Complete equation input.
5
(or
6
4
0 7 )
Calculate the expression.
]
The blinking mark in the upper right
side of the display indicates the
expression is being calculated.
]
SHIFT/CHANGE
Features
EL-9400 Graphing Calculator
Shift
Graph shift function helps students grasp the relationship between an equation and its graph.
Shift the graph’s location without changing its shape, and the change is immediately reflected
in the equation on the right side of the display.
Example
When the graph of y = x2 is shifted downward,
1
2
(Change the location of graphs)
how does this affect the equation?
Display
Enter
SHIFT/CHANGE
]
If
SHIFT
highlighted press .
Select shift. Cursor moves to the
equation menu.
NotesKey Operation
mode.
is not already
]
3
4
5
]
2
and
Select the equation: y = x
draw the graph.
Select the location of the shift:
move cursor down twice.
View the result of the shift.
]
2
y = x
y = x2-2
5
SHIFT/CHANGE
Features
EL-9400 Graphing Calculator
Change
Graph change function helps students grasp the relationship between an equation and its
graph. Change the shape of the graph, and the change is immediately reflected in the equation
on the right side of the display.
Example
(Change the shape of the graphs)
When the graph of y = x2 is changed,
how does it affect the equation?
1
2
Display
Enter
and specified (
Select change. Cursor will move
to the equation menu.
NotesKey Operation
SHIFT/CHANGE
CHANGE
mode
).
3
4
5
]
2
and
Select the equation: y = x
draw the graph.
Select the location of the
change: increase the value of ycoordinates.
View the result of the change.
y = x
y = 2x
2
2
]
6
Features
EL-9400 Graphing Calculator
Slide show
Slide show assists with teacher preparation. By selecting from the built-in options or creating your own series of slides, you can demonstrate lessons with minimum preparation
time.
Example
Use the built-in slide show of y = x2 to show how the
coordinates change as you move along the graph.
1
2
3
4
Display
NotesKey Operation
Specified
Select the built-in menu.
Select y = x2 and the first slide
appears.
Begin the slide show by pressing the cursor key.
SLIDE SHOW
mode.
Moving between the values you
can follow the changes in the
graph’s coordinates, making the
nature of the graph easier to
understand.
* View the selection of built-in slide shows
on the following pages.
7
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