Section 1 Getting Started; Power On And Off; Low-Power Indication; Keyboard Operation - HP -10C Owner's Handbook Manual

Power On and Off

The = key turns the HP-10C on and off.
automatically turns itself off after several minutes of inactivity.

Low-Power Indication

When a flashing asterisk, which indicates low battery
power, appears in the lower left-hand side of the
display, there is no reason to panic. You still have
plenty of calculator time remaining: at least 15
minutes if you continuously run programs, and at least an hour if you manually
perform operations. Refer to appendix C (page 96) for information on replacing
the batteries.

Keyboard Operation

Primary and Alternate Functions

Most keys on your HP-10C perform one primary and one alternate function. The
primary function of any key is indicated by the character(s) on the upper face of
the key. The alternate function is indicated by the character(s) printed in gold
above the key.
*
Note this key is shorter than the others to prevent its being inadvertently pressed.
Section 1
Getting Started
•
To select the alternate function printed in gold
above a key, first press the gold prefix key
´, then press the function key. For example:
´$.
•
To select the primary function printed on the
face of a key, press only that key. For
example: ".
*
To conserve power, the HP-10C
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