Sharp EL-9400 User 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
Introduction
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.
EL-9400 Graphing Calculator
1
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
2
Basic operation
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
Function keys
Y
=
EZ
Names of parts
Communication port for peripheral devices
Power off
Power on
CL
Erase equations and
remove error displays
Power ON/OFF
○○○ ○○○○
○○○
○○○○○○
QUIT
CL
Cancel of previous
function (Escape)
○○○
Graphing keys
Power supply ON/OFF key
Alphabet specification key
Secondary function
specification key
1
2
3
4
5
6
7
8
9
Display screen
Cursor movement keys
Clear/Quit key
Variable enter key
Calculation execute key
10
EL-9400 Graphing Calculator
3
Reset function
1) When trouble occurs
Press to enter the reset mode.
• 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.
SET UP menu
Press
SET UP
.
• Contents displayed on the right side of
the screen are the current settings.
Adjusting screen contrast
• The contrast adjust screen will appear
when pressing
.
Press to lighten contrast.
Press to darken contrast.
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:
There may be differences in the results
of calculations and graph plotting
depending on the SET UP settings.
]
]
EL-9400 Graphing Calculator
NotesKey Operation Display
Example
4
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.
1
2
5
4
3
6
Input the equation and see how it can be easily
viewed with the equation editor.
CL
0
1
a/b
2
a/b
1
x
2
Clear the display.
Select CALC and
Enter the range of the integral.
Complete equation input.
Calculate the expression.
The blinking mark in the upper right
side of the display indicates the
expression is being calculated.
Enter
(or
6
)
(or
0
7
)
]
]
X/T
X/T
(Integral function)
EL-9400 Graphing Calculator
NotesKey Operation Display
Example
5
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.
When the graph of y = x2is shifted downward,
how does this affect the equation?
Select the location of the shift:
move cursor down twice.
Enter
SHIFT/CHANGE
mode.
1
2
3
4
5
Select shift. Cursor moves to the
equation menu.
Select the equation: y = x
2
and
draw the graph.
View the result of the shift.
SHIFT/CHANGE
(Change the location of graphs)
y = x2
y = x2-2
Features
If
SHIFT
is not already
highlighted press .
]
]
]
]
EL-9400 Graphing Calculator
NotesKey Operation Display
Example
6
When the graph of y = x2is changed,
how does it affect the equation?
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.
Enter
SHIFT/CHANGE
mode
and specified (
CHANGE
).
1
3
4
5
2
Select change. Cursor will move
to the equation menu.
Select the equation: y = x
2
and
draw the graph.
View the result of the change.
Select the location of the
change: increase the value of y-
coordinates.
SHIFT/CHANGE
(Change the shape of the graphs)
Features
y = x2
y = 2x2
]
]
EL-9400 Graphing Calculator
NotesKey Operation Display
Example
7
Slide show
Slide show assists with teacher preparation. By selecting from the built-in options or cre-
ating your own series of slides, you can demonstrate lessons with minimum preparation
time.
Use the built-in slide show of y = x2to show how the
coordinates change as you move along the graph.
Select y = x
2
and the first slide
appears.
Moving between the values you
can follow the changes in the
graph’s coordinates, making the
nature of the graph easier to
understand.
Specified
SLIDE SHOW
mode.
1
2
4
3
Begin the slide show by press-
ing the cursor key.
Select the built-in menu.
Features
* View the selection of built-in slide shows
on the following pages.
EL-9400 Graphing Calculator
8
Built-in slide show selections
1) Y=X22) Y=AX+B 4) Y=1
/
X
Features
3) Y= X
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