HP 48g Graphing Calculator - Manual (Page 28)

Pressing Q once activates Alpha-entry mode for one character only.
Pressing @ twice locks Alpha-entry mode. Alpha-entry mode then
remains active until you press @ again or press (ENTER) (or (CANCEL))
. You can also press and hold down while you type several
characters in a row. If you prefer, set Flag —60 to enable a single
press of © to lock Alpha-entry mode.
To lock or unlock the lowercase keyboard:
■ If d. is locked on, press S3© to lock lowercase mode.
■ If
a
is off, press
©©S)©
to lock lowercase mode.
a To unlock lowercase, press O©- Also, terminating the entry
process—by pressing
( E N T E R )
or
[ C A N C E L
), or by executing a
command—automatically unlocks lowercase mode.
While in lowercase Alpha-entry mode, you must use S3 to get
uppercase letters. Lowercase mode automatically unlocks when you
press
( E N T E R )
or
( C A N C E L
), or execute a command.
Keying in Special Characters
Although most of the 256 characters that can be displayed on the
HP 48 are available on the Alpha keyboard, it is easy to forget the
particular sequence of keystrokes needed for the less-frequently used
characters.
The CHARS application is designed to avoid this problem by enabling
you to select characters directly from the display and insert them at
the cursor point. CHARS displays the HP 48’s characters 64 at a
time, along with the number of each character and the keystroke used
to type it in from the alpha keyboard.
2-4 Entering and Editing Objects