Getting started, Power on and off, Adjusting the display contrast – HP 10B User Manual
Page 24: Simple arithmetic calculations
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Getting Started
Power On and Off
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To turn on your HP-lOB, press O (ihc key above ihe “ON
label). To turn the calculator off, press the yellow shift key
(I )> then [§ (also written BIOPFI).
Since the calculator has continuous memory, turning it off
^ docs not affect the information you’ve stored. To conserve
energy, the calculator turns itself off approximately 10 minutes after you
stop using it. The calculator’s three alkaline batteries last approximately
one year. If you .see the low-battery symbol (CD) in the display, replace
the batteries. Refer to appendbe A for more information.
Adjusting the Display Contrast
To change the brightness of the display, hold down and press (T) or
0.
Simple Arithmetic Calculations
Arithmetic Operators.
The following examples demonstrate using the
arithmetic operators 0, 0, 0, and 0.
If you press more than one operator consecutively, for example 0 0 0
0 0, all are ignored except the last one.
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