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

EL-9400 Graphing Calculator
9
5) Y=sinX 6) Y=tanX 7) Y=cos-1X 8) Y=lnX
Features
Built-in slide show selections

EL-9400 Graphing Calculator
10
Graphing Procedures
The EL-9400 has three unique functions that simplify graphing procedures: Rapid Graph,
Rapid Window and Rapid Zoom. Of course, the EL-9400 supports conventional graphing
procedures as well.
Following outlines graphing procedures and indicates the steps where Sharp's unique functions can
be used to simplify operations. These functions are introduced on the following pages.
Step 1
Input equation
Step 2
Set X, Y range
Xmin =
Xmax =
Xscl =
Ymin =
Ymax =
Yscl =
Step 3
Draw graph
Step 4
Adjust viewing
window
Manual Input
Graphing Procedure
Y =
EZ
EZ
EZ
Rapid Graph
Manual Input Rapid Window
Manual Input
Rapid Zoom
Press Graph button to draw graph.
Simply select from
built-in menu to
modify desired type of equation .
Simply select from
built-in menu to set
window size.
Use arrows to adjust window
size while viewing graph.
Go back to Step 2 to
readjust window size.
Features
3
ab
x
2
2
1
5
(–)
3
3
1
(–)
5
1
5
Amending
range size
X/T
X/T
X/T

EL-9400 Graphing Calculator
NotesKey Operation Display
Example
11
Rapid graph
Graphing has never been easier. With its full range of preset equations, rapid graph
simplifies equation input. Use in conjunction with the rapid window function or with any
graph created.
Draw the graph for y = 2sin (-2x+ ) + 2
using the rapid graph function.
Enter the equation entry mode.
Enter Rapid Graph mode and view
the equation-type menu.
Select the sin equation format and
view the sin equation style.
Select the type of equation: Trigo-
nometric, and view the equation
format menu.
Draw the graph.
(Note: Previous range values may affect
the viewing window. To reset range
values, use Rapid Window.)
1
2
3
4
5
6
Select the second equation style and
input. If necessary, make changes to
the coefficients.
Y =
EZ
Features

EL-9400 Graphing Calculator
NotesKey Operation Display
Example
12
Rapid window
Rapid window simplifies setting window size with a range of preset values. Use in con-
junction with the rapid graph function or with any graph created.
After using Rapid Graph to draw the graph of y = 2sin (-2x+ ) + 2 (refer
p. 11), set the viewing window using the rapid window function.
1
2
3
4
5
7
Select the No. 3 style and view the
X-range menu.
Enter Rapid Window mode.
Select the Y-range and draw the
graph.
Move the cursor to No. 5:
(-0.5 < Y < 5 scl=0.5)
Enter viewing window setup mode.
EZ
(Five times)
Select X-range No. 4:
(-1 < X < 10 scl=1), and
view the Y-range menu.
Features
(or
5
)
(or
5
)
(Six times)

EL-9400 Graphing Calculator
NotesKey Operation Display
Example
13
Rapid zoom
Rapid zoom offers one-touch adjustment of window size while viewing the graph. No more
guessing or wasting class time to find optimal values for window size.
Adjust the viewing window for y = x3+ x2- 2x
to show the entire graph.
1
2
3
4
Create the graph y = x
3
+ x
2
- 2x
using the following conditions:
X-range: xmin = -3
xmax = 3
xscl = 1
Y-range: ymin = -1.5
ymax = 1.5
yscl = 0.5
View display (adjusted).
Enter Rapid Zoom mode.
5
Change X-range from Ymax = 1.5 to
Ymax=2. Draw the graph.
EZ
Features
Y =
1
5
(–)
3
3
1
(–)
5
1
5
Repeat: Change Y-range from Ymax
= 2 to Ymax=2.5. Draw the graph
3
ab
x
2
2
X/T
X/T
X/T

EL-9400 Graphing Calculator
14
PC-LINK
Connect the EL-9400 with a PC or Macintosh computer to expand the possibilities of data
exchange using PC-Link software.
System options
1
2
3
Procedure
Turn off the EL-9400.
Connect the EL-9400 to the PC by using the
CE-450L, PC-Link adaptor and PC connector
(see above diagram).
Make sure that the RS-232C (serial port) is connected
to the PC. Use of the connector is determined by the
shape of the PC serial port (see below chart).
4
Open PC Link-Software.
5
Switch on EL-9400.
6
*It is essential to use the same port for both the PC
and the PC Link-Software.
Operate according to the instructions on the
screen.
PC-Link
Software
PC-Link
Software
PC conversion
connector for
IBM-PC
PC conversion
connector for
Macintosh
CE-450L
IBM PC
or Compatibles
R
R
Macintosh
Shape of PC serial port Connecting procedure
25 pin (male) Connect the other side (25-pin side) of PC LINK
adaptor to the serial
port for the PC.
Connect the other side (25-pin side) of PC LINK
adaptor to the 25-pin
9 pin (male) terminal of a converting adaptor. Also connect the
other side (9-pin side) of the converting adaptor to
the serial port for the PC.
8 pin (female) For Macintosh
• Creates and edits EL-9400 programs on a PC.
• Receives and saves programs and various data from EL-9400.
• Makes a backup of all the contents of EL-9400.
• Sends programs and various data to EL-9400.
What is PC LINK?
• Loads image data of EL-9400.
• Converts programs and various data files into a Text File. Converts
program text files into a Program File.
• Prints out programs and various data files.
CE-LK1(PC-link system)

EL-9400 Graphing Calculator
15
CE-450L
Communication cable
EL-9400 EL-9400
*
mark desired data to be
sent.
]
]
S et to set communication
Transfer data between two EL-9400 calculators using the communication cable (CE-450L).
5
7
8
9
Sender
Communication Procedure
( or )
A SELECT ....................... Sends files individually as described below.
1 ALL .............................. Selects and displays all files.
2 List ............................... Selects and displays all list files.
3 GraphEq ....................... Selects and displays all graph eqations.
4 Program ....................... Selects and displays all program files.
5 G_Data ......................... Selects and displays all graph data files.
6 L_Data ......................... Selects and displays all list data files.
7 Picture ......................... Selects and displays all picture data files.
8 A~Z, Ø .......................... Selects and displays all fixed memory of A to Z, and Ø
B BACKUP ...................... Menu to send all data of files. Use this
feature to send the entire content.
List of the SEND menu
Receiver
3
4
( or )
6
2
1
Plug the cable into both calculators.
Turn power on.
Specified LINK.
Select LINK/SEND.
Select SEND/ALL.
( or
2
)
( or
1
)
Select ‘LI’, ‘YI’
Execute Sending function.
Select LINK/RECEIVE.
Specified LINK.
List of sendable data will
appear on screen.
]
]

EL-9400 Graphing Calculator
16
AC adaptor (optional)
OHP Projection Panel
OHP Panel
Controller
CE-450L
The CE-450L is included
for separate use
(see page 15)
OHP System
Use the EL-9400 OHP system with the overhead projector to make classroom presen-
tations convenient for the whole class to see.
System options
1
2
3
4
5
Procedure
Plug in the cable connector of the OHP Projection Panel straight into the connection terminal of the
OHP Panel Controller.
(The optional AC adaptor is recommended for extended use of the OHP Projection Panel.)
Turn on the power of the overhead projector.
Operating the OHP Panel Controller.
The OHP Projection Panel display is synchronized with the display of the OHP Panel Controller.
Place the OHP Projection Panel on top of the overhead projector to project images onto the screen.
Switch on the OHP Panel Controller.
Switch off the OHP Panel Controller.
EL 94T (OHP system)

EL-9400 Graphing Calculator
17
Menu tree 1
SET UP ( )
Rad 1 Deg
FloatPt 2 Rad
1 FloatPt
2 Fix
1 1 1 Rect
2 Param2 2
3 3
4 4
5 5
6 6
7 7
8 8
9 9
0 0
9 3 Grad
Rect
Decimal
Eqn
2nd F SET UP
A
1 Decimal
2 Mixed
3 Improp
1 Eqn
2 Oneline
B DRG
F AMSWER G EDITOR
C FSE D TAB E COORD
FORMAT ( )
OFF 1 ON
OFF 2 OFF
1 ON
2 OFF
1 Connect
2 Dot
Connect
Sequen
2nd F FORMAT
A
1 Sequen
2 Simul
B EXPRES
E STYLE 2
C Y1D STYLE1
MATH ( )
1 log2 1 abs(
2 2x2 round(
3 ipart
4 fpart
5 int
6 min(
7 max(
8 lcm(
9 gcd(
1 random
2 nPr
3 nCr
4!
3 fmin(
4 fmax(
5 d/dx(
6 ∫
7 dx
MATH
B NUMA CALC C PROB
1
2 '
3 "
4 r
5 g
3 >
1
2
4 ≥
5 <
6 ≤
E ANGLE F INEQ
1 and
2 or
3 not
4 xor
5 xnor
G LOGIC
4 xy (
5 r x(
6 r y(
3 xy r(
2 dms
1 deg
D CONV

EL-9400 Graphing Calculator
18
Menu tree 2
CALC
CALC
When coordinate system is Rect When coordinate system is Param
( ) ( )
1 Value
2 Intsct
3 Minimum
4 Maximum
5 X_Incpt
6 Y_Incpt
7 Inflec
2nd F CALC
( )
2nd F DRAW
LIST
A OPE
( )
1 sortA(
2 sortD(
3 dim(
4 fill(
5 seq(
6 cumul
7 df_list
8 aug...(
A DRAW
1 ClrDraw
2 Line(
3 H_Line
4 V_Line
5 T_Line(
6 Draw
7 Shade(
8 DrawInv
9 Circle(
0 Text(
B POINT
1 PntON(
2 PntOFF(
3 PntCHG(
4 PxlON(
5 PxlOFF(
6 PxlCHG(
7 PxlTST(
B MATH
1 min(
2 max(
3 mean(
4 median(
5 sum(
6 prod(
7 stdDv(
8 varian(
D REG
01 Med Med
02 ax+b
03 a+bx
04 x
2
05 In
06 log
07 ab
x
08 ae
bx
09 x
-1
10 ax
b
11 x'
12 y'
C L_DATA
1 stoLD
2 RclLD
2nd F LIST
CALC
CALC
1 Value
2nd F CALC
STAT
A EDIT
( )
edit list
Press
B OPE
1 sortA(
2 sortD(
3 SetList
4 ClrList
C CALC
1 1_Stats
2 2_Stats
STAT
ENTER
D LINE
select
line type
Press
ENTER
DRAW
C ON/OFF
1 DrawON
2 DrawOFF
F PICT
1 StoPict
2 RclPict
G SHADE
1 SET
2 INITIAL
E G_DATA
1 StoGD
2 RclGD