HP 39g+ - Manual (Page 11)

Getting started 1-1
1
Getting started
On/off, cancel operations
To turn on Press
>21@ to turn on the calculator.
To cancel When the calculator is on, the >21@ key cancels the current
operation.
To turn off Press
>6+,)7@
OFF to turn the calculator off.
To save power, the calculator turns itself off after several
minutes of inactivity. All stored and displayed information is
saved.
If you see the ((
•
)) annunciator or the Low Bat message,
then the calculator needs fresh batteries.
HOME HOME is the calculator’s home view and is common to all
aplets. If you want to perform calculations, or you want to quit
the current activity (such as an aplet, a program, or an editor),
press
>+20(@. All mathematical functions are available in the
HOME. The name of the current aplet is displayed in the title
of the home view.