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Casio FX-7400GII User Manual

Casio FX-7400GII
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E-6
2. Using the Backlight
(fx-9860GII SD/fx-9860GII/fx-9860G AU PLUS only)
Your calculator is equipped with a backlight for easy reading, even in the dark. You can
conserve battery power by limiting backlight operation to only when you need it.
S To turn the backlight on or off
Press *(LIGHT) to toggle the backlight on and off.
Changing the Backlight On/Off Key
You can configure the calculator so the backlight turns on when any key is pressed, instead
of requiring the *(LIGHT) to toggle the backlight on and off. For details, see “To specify
the backlight key” (page 12-2) in the separate Software Version 2.00 User’s Guide.
• Backlight duration
The backlight turns off automatically if you do not perform any key operation for a preset
amount of time (30 seconds or 10 seconds).
If you perform a key operation, the backlight duration will be extended for the applicable
preset amount of time (30 seconds or 10 seconds).
See “To specify the backlight duration” (page 12-2) in the Software Version 2.00 User’s Guide
for information about how to specify 30 seconds or 10 seconds as the backlight duration
time.
Backlight and Battery Life
Frequent use of the backlight will shorten battery life.
The following are guidelines that show how battery life is affected by backlight use. It is
based on a new set of alkaline batteries at a temperature of 25°C.
Backlight Use Approximate Battery Life
5 minutes calculation*
1
, 55 minutes display per hour; no
backlight use
200 hours (80 hours*
2
)
5 minutes calculation*
1
, 55 minutes display, 3 minutes
backlight operation per hour
190 hours (75 hours*
2
)
5 minutes calculation*
1
, 55 minutes display, 15 minutes
backlight operation per hour
150 hours (70 hours*
2
)
5 minutes calculation*
1
, 55 minutes display per hour;
continuous backlight use
80 hours (50 hours*
2
)
*
1
fx-9860GII SD: 5 minutes SD card access
*
2
fx-9860GII SD only

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Casio FX-7400GII Specifications

General IconGeneral
TypeFinancial
Form factorPocket
Product colorGray
Clock with calendarNo
Digits- digits
Display resolution64 x 128 pixels
Display number of lines8 lines
Display number of characters21
Battery typeAAA
Number of batteries supported2
Internal memory0.02 MB
Weight and Dimensions IconWeight and Dimensions
Depth163 mm
Width81.5 mm
Height19.3 mm
Weight160 g
Dimensions (WxDxH)81.5 x 163 x 19.3 mm

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