HP 48G - Manual (Page 19)

Lesson 3: Entering Characters
There are over 200 characters available on the HP 48. They can be
used in text strings and, with a few restrictions, in variable names and
equations. Most of these characters are available on tile Alpha (@)
keyboard, and all are accessible using the CH ARS feature.
The Q Keyboard
The @ key is a special shift key that converts the
keylioard into a kind of typewriter. Whenever you see the
d. annunciator at the top of the display, the next key you
liress will type its alpha character instead of performing
its operation.
Only the up|)er-case English letters are printed on the keyboard (in
white at the lower-right corner of the respective key).
You can turn on the Ot animiiciator (that is, enl.er
a l p h a m o d e )
several
ways, depending on what is most convenient for you:
(oT) Enters alpha inode for the next keystroke only.
©i±l} Enters lowercase ((5)) alpha mode for the next
keystr'oke only.
@(5) Enters extended ((¿)) alpha mode for the next
keystroke only.
(o)-(hokl)
Locks alpha mode on until you press (^, (ENTER), or
(CANCEL).
Enters alpha mode for as long as you hold the key
down. You can jrress other keys meanwhile.
Locks lower-case alpha mode on until you press
(ENTER), or (CANCEL).
Some exam]iles of the alpha keyboard are shown lielow:
( q T) a B (2 C
(a}-(hold) A B C (release)
(^ (^ ABC
© ^ ©O © C'
(a)-(hold) .A (5)B C (release’
© © ^' ©
(© (© i'*‘i) (© B C (W)
Introducing the HP 48 2-7