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MAIN Display
or
application
menu
o/oGl{G
menu
HYP
menu
-
I
r.rew
I
OLD
%CH
Figure 1-5. Switching Numeric Function
Menus
Gontrol
Menus
Each
control menu
has one
level. Exiting a control menu always
dis-
plays the menu you were viewing previously. When the control
operation performed
is
setting the display format
or printing
stored
data,
tl.
exit
occurs automatically.
Galculations With Variables
in
Menus
Many application and numeric function
menus
do
calculations using
a
set
of
variables
accessed
by
menu keys. The
variables are
a
named
location
in
calculator
memory. You use
the menu keys to
store
num-
bers
into the known
variables
and to
solve
for
the unknown
variable.
Example: Galculating
the
Percent Ghange Between
TWo
t{umbers.
Calculate
the
percent change
between
37.5
and
55.5 using
the %CHG
menu.
Press
I[
"z"cHc
I
to
display the %CHG menu, which
consists
of
the
variables OLD, NEW,
and
o/oCH.
The
followirg
illustration shows
the
keystrokes
for
doing the
calculation.
ACOSH
l:
Getting Started
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