Sharp Elsi Mate EL-2135 Operation Manual page 4

Backup Battery
If the light exposed to the solar cell is insufficient, the backup battery is turned on
automatically to operate the calculator.
Automatic Power-Off function:
This calculator is automatically turned off approximately 7 minutes after the last key
operation to save the battery.
Please press the
Clear number entered
Correct function
Clear the calculator (except memory)
Clear the memory
Clear the grand total memory
Clear error conditions
(In the case of pressing the
memory is cleared.)
2
POWER SUPPLY
key when you see no indication.
CLEAR AND CORRECT
key the contents of the memory and grand total
12 35 12 34
123 123 4
Press key.
Press key.
Press key twice.
Press or key.
12 35 34
(12 35 4)
123 4