Understanding The Display And Keyboard; The Cursor; Correcting And Clearing The Display ([!] And @]) - HP -22S Owner's Manual

Understanding the Display and Keyboard
The Cursor
The cursor (_) is visible during
digit entry-that
is, when you are in
the process of keying in a number. The cursor is also visible when
you are keying in an equation. (Entering equations is introduced later
in this chapter.)
Correcting and Clearing the Display
([!)
and
@])
When
th~
cursor is on, or when you've just keyed in an operator, [!)
deletes the last character you keyed in. Otherwise, [!) clears the entire
number.
During digit entry,
@J
clears the number you are keying in. Other-
wise,
@J
clears the display of its current contents and cancels the
current calculation.
Clearing Messages and Menus.
[!) and
@J
also clear messages and
menus:
• When the HP-22S is displaying a message, [!) or@] clears the mes-
sage and restores the original contents of the display .
• When the HP-22S is displaying a menu, [!) or
@J
cancels the
menu. In multilevel menus, [!) backs out one level at a time, while
@J
cancels all menus and restores the original display. (See MMenus
and Pointers" on page 16.)
1: Getting Started 15