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12 Getting Started; Power On And Off; The Display Contrast; Simple Calculations - HP -22S Owner's Manual

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Getting Started
Power On and Off
The HP-22S is powered by three alkaline batteries. The calculator is
shipped with batteries installed.
To turn on the calculator, press @] (the key above the "ON" label). To
turn the calculator off, press the. (shift) key, then @] (also written
. , OFF
I). Since the calculator has
Continuous Memory,
turning it off
does not affect the information you've stored. To conserve energy, the
calculator turns itself off approximately 10 minutes after you stop us-
ing it.
Under most conditions, the calculator's batteries last well over a year.
you see the low-battery symbol (c:::J) in the display, replace the
batteries as soon as possible. See appendix A for instructions.
The Display Contrast
To change the display contrast, hold down @] and press @ or
Simple Calculations
This section introduces simple arithmetic calculations. See chapter 2
for additional information.
you make a typing mistake, press [I) to backspace to the wrong
1: Getting Started


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