Sharp EL-9400 - Basic Operation: Key Usage and Settings; Guide to Key Usage Conventions; Screen Contrast Adjustment; Calculator Reset Functionality

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.
]
]