General guide
Power supply
On or Off :
To turn the calculator on, press [ ON/C ]; to turn the calculator off,
press [ 2ndF ] [ OFF ].
Auto power-off function :
This calculator automatically turns off it when not operated for
approximately 15 minutes. Power can be restored by pressing the
[ ON/C ] key again. Memory contents and the previous mode setting
(STAT, DEG, CPLX, Base-n,…) are retained even when power is
turned off or auto power-off.
Battery replacement :
The calculator uses two alkaline button batteries GP76A(LR44)
for power. If the display becomes dim and difficult to read, the
batteries should be replaced as soon as possible.
To replace batteries:
1) Remove the screws that hold the back cover.
2) Remove the back cover.
3) Replace the old batteries and install new ones with polarity in
correct directions.
4) Secure the screws in place, then press [ ON/C ] to turn the
power on.
The keyboard
Many of the calculator’s keys are used to perform more than one
function. The functions marked on the keyboard are printed
differently to help you find the one you need quickly and easily.
1st functions
Those are the functions that are normally executed when you
press the key.
2nd functions
The second function is printed above or to the right of the key. To
execute 2nd functions key, please press [ 2ndF ] then the
corresponding key. When you press [ 2ndF ], the “ 2ndF ” indicator
E - 2
sin
sin
–1
1st functions
2nd functions
