HP 49g Graphing Calculator - Manual (Page 22)

Alpha keyboard:
comprises the keys with the characters Ato Z
marked on their face. (These characters are colored white on a green
backgroimd.) You need to activate the alpha keyboard before you can
enter an alphabetic character. (Until you activate the alpha keyboard,
tírese keys belong to the primary or ftmction keyboard, as described
above).
You activate the alpha keyboard by pressing (ALPHA). For example, to
enter r press (BM)—thereby activating the alpha keyboard—and (COg)
(since (CO^ is the primary key that has T marked on it).
You can keep the alpha keyboard active by pressing (BPHA) twice. Every
character you subsequently enter is a character fronr the alpha
keyboard. In this situation, you press
(MS)
again to deactivate the
alpha keyboard.
While the alpha keyboard is active, you can press the keys on the
numeric keypad if you want to add a number to a text string.
The alpha keyboard is described m more detail in chapter 2, “Basic
operation”.
Alpha
left-shift
keyboard:
comprises the keys of the alpha keyboard
(see above) when pressed in combination with the 0 key. The (ALPHA)
key is pressed first—to activate the alpha keyboard—followed by the
0
key (which activates the alpha left-shift keyboard). Finally, some
other key is pressed to enter a character.
The characters you can enter using the alpha left-shift keyboard are
lower-case alphabetic characters and various symbols. These are
shown in blue above the keys in the illustration on the front cover of
the pocket guide.
For example, to enter a lower-case
t,
press (ALPHA)
0
(COS).
Alpha right-shift keyboard:
comprises the keys of the alpha
keyboard (see above) when pressed in combination with the
0
key.
The (BM) key is pressed first—to activate the alpha keyboard—
followed by the
0
key (which activates the alpha right-shift
keyboard). Finally, some other key is pressed to enter a character.
The characters you can enter using the alpha right-shift keyboard are
characters of the Greek alphabet, arrows, and various symbols. These
are shown in red above the keys in the illustration on the front cover of
the pocket guide.
For example, to enter o, press
(ALPHA) 0 (siÑ).
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