Clearing
Variables
Variables'
values
are retained by Continuous
Memory
until you re
place them or clear them.
Clearing
a variable stores a zero there; a
value of zero takes no memory.
To
clear
a
single
variable:
store
zero
in
it.
To
clear
selected
variables:
1. Press
BrMEMl
{VflR}
and use
[•]
or§][a] to display the variable.
2.
Press
ill
clear
I.
3. Press [c] to cancel the catalog, or (4] to back out.
To
clear
all variables
at
once:
press Hi clear I
{VflRS}.
Arithmetic
With
Stored
Variables
Storage
arithmetic
and
recall
arithmetic
allow you to do calculations
with a number stored in a variable
without
recalling
the
variable
into
the
stack.
A calculation uses one number from the
X-register
and one
number from the specified variable.
Storage
Arithmetic
Storage
arithmetic
uses rsTOllTI,
fsToFn,
fsrolPn,
or
fSTOllTl
to do
arithmetic
in
the
variable
itself
and
to
store
the
result
there.
It
uses
the
value in the X-register and does not affect the stack.
New value of variable = Previous value of variable
{+,
—,
x,
-s-}
x
For example, suppose you want to reduce the value in A (15) by the
number in the X-register (3, displayed). Press
[sto!
Q
A.
Now A =
12, while 3 is still in the display.
50
3:
Storing
Data
Into
Variables
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