Power On and Off
To begin using your hp 12c platinum, press the ; key
turns the calculator off. If not manually turned off, the calculator will turn off
automatically 12 minutes after it was last used.
A battery symbol (
calculator is on signifies that the available battery power is nearly exhausted. To
replace the batteries, refer to Appendix F.
Adjusting the Display Contrast
The display's readability depends on lighting, your viewing angle, and the display
contrast setting. You can adjust the display contrast, by holding down the f key
and pressing + or -.
Many keys on the hp 12c platinum perform two or even three functions. The
primary function of a key is indicated by the characters printed in white on the
upper face of the key. The alternate function(s) of a key are indicated by the
characters printed in gold above the key and the characters printed in blue on the
lower face of the key. These alternate functions are specified by pressing the
appropriate prefix key before the function key:
Note that the ; key is lower than the other keys to help prevent its being pressed
) shown in the upper-left corner of the display when the
To specify the alternate function printed in gold
above a key, press the gold prefix key (f), then
press the function key.
To specify the primary function printed on the upper
face of a key, press the key alone.
To specify the alternate function printed in blue on the
lower face of a key, press the blue prefix key (g),
then press the function key.
. Pressing ; again