HP 39g+ - Manual (Page 11)

Getting started 1-1
1
Getting started
On/off, cancel operations
To turn on Press to turn on the calculator.
To cancel When the calculator is on, the key cancels the
current operation.
To turn off Press 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 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
. All mathematical functions are
available in the HOME. The name of the current aplet is
displayed in the title of the home view.