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2-17
Important!
The calculator backs up user data (main memory) when you turn power off and loads the
backed up data when you turn power back on.
When you press the RESTART button, the calculator restarts and loads backed up data.
This means that if you press the RESTART button after you edit a program or other data, any
data that has not been backed up will be lost.
u Reset
Use reset when you want to delete all data currently in calculator memory and return all mode
settings to their initial defaults.
Before performing the reset operation, first make a written copy of all important data.
For details, see “Reset” (page 9-3).
k Low Battery Message
If the following message appears on the display, immediately turn off the calculator and
replace batteries as instructed.
If you continue using the calculator without replacing batteries, power will automatically turn
off to protect memory contents. Once this happens, you will not be able to turn power back on,
and there is the danger that memory contents will be corrupted or lost entirely.
• You will not be able to perform data communications operations after the low battery
message appears.
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