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 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.
Protective cover The calculator is provided with a slide cover to protect the 
display and keyboard. Remove the cover by grasping 
both sides of it and pulling down.
You can reverse the slide cover and slide it onto the back 
of the calculator. this will help prevent you losing the 
cover while you are using the calculator.
To prolong the life of the calculator, always place the 
cover over the display and keyboard when you are not 
using the calculator.
HP 39gs English.book  Page 1  Wednesday, December 7, 2005  11:24 PM