HP 48G - Manual (Page 11)

Lesson 1: Getting Ready
Here are a few filings to do to prepare the HP 48 before you begin.
Turning the HP 48 On and Off
► Press fON ) to turn the machine on. (The (ON ) key is
highlighted in the diagram at the right.)
► Press El to turn it off. The key is a
s h i f t e d
version of the fON ) key (the green (r^ shift).
The calculator will also turn itself off if you haven’t used it for 10
consecutive minutes in order to preserve its batteries. Unlike some
calculators (or computers) you may have used, the HP 48 can be
turned off at any time without risking data loss.
Adjusting the Display Contrast
► With the calculator on, hold down the fON) key and press (to
darken) or (3 (to lighten) the display.
Preparing the Built-In Examples
1. Hold down (3 (highlighted in the diagram at the right)
and while holding it, press (in sequence) (COSh:, f 1 e .
( 1 a . ( Ic. (1M3 h so that you type in the word
TEflCH at the bottom of the display. When finished,
release the (3 key.
2. Press (ENTER).
I n )I )l ! l i:
The TEACH command resets the calculator modes to their default
values and loads a number of example functions, data sets and other
objects that are used in some of the examples in the
H P f 8 G S e r i e s
Q u i c k S t a r t G u i d e and the H P f S G S e r i e s U s e r 's G u i d e .
Whenever you wish to remove all of the objects that TEACH created:
type C 4 (holding down the (3 key as in the example above)
and then press (ENTER).
Start Here 1-3