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The; Clearing Portions Of Memory; Messages And The Attention Annunciator - HP -22S Owner's Manual

Scientific calculator.
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The VARS (Variables) Catalog
The {VARS} menu key displays a catalog of variables containing
non-zero values. Press [Y] or
.00
to see the entire catalog. Press @)
to exit the catalog. (See page 40 for additional information.)
Clearing Portions of Memory
Pressing .,
CLEAR
I
displays the CLEAR menu (except while viewing an
equation or the VARS catalog).
The CLEAR Menu
Key
Description
{VAR}
Clears a" variables. (Clearing individual variables is covered in
chapter 2.)
{EQ}
Clears a" equations and expressions you've entered into the list
of equations.
{ALL}
Clears everything you've stored in memory (variables, statistics
values, equations you've entered, and the number in the display).
{I}
Clears a" the statistical registers.
Pressing {VAR}, {EQ} or {ALL} displays a confirmation message:
CL VARS?
Y N
CL EQNS? Y N
CLR ALL? Y N
{N} allows you to recover from what might otherwise be an unpleas-
ant mistake.
Messages and the Attention Annunciator
When you perform certain operations, the attention annunciator
(.6.)
comes on and the HP-22S displays a message. The attention annunci-
ator also comes on when you attempt an incorrect operation, and
when the calculator is ignoring an inappropriate keystroke. See page
173 for a list of messages and their meanings.
28
1: Getting Started

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