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The Automatic Memory Stack
37
Press
Kia
twice more
...
and the
stack shifts
...
. . .
through this
.
.
.
.
.. back to the
start again.
T
3.00
z
2.00
y
1.00
X
4.00
Display
T
4.00
Z
3.00
y
X
2.00
1.00
Display
Once again
the number
1.00
is in
the displayed X-register. Now
that
you
know how
the stack is rotated, you can
use the
Kia
key
to review
the contents of
the
stack at any time so
that
you can
always tell what
is in
the calculator. Always
remember,
though
,
that
it takes
four
presses ofthe
Kia
key to return the
contents
to
their
original
registers.
Exchanging X and Y
Thef!D (x exchange y)
key
exchanges
the
contents
of the
X-
and V-registers without affecting
the
Z- and T-registers.
If
you
pressf!D
with
data intact from
the previous example,
the num-
bers in the
X- and Y
-registers
will be changed .
.
. . from this ...
.
.. to this.
T
4.00
T
4.00
Z
3.00
Z
3.00
Y
2.00
Y
1.00
X
1.00
X
2.00
Similarly,
pressing
f3D
again will restore
the numbers
in the
X- and V-registers to
their
original
places.
This
key is used
to
position
numbers
in the
stack or simply
to
view the V-register.
Clearing the Stack
To
clear
the
displayed
X-register only, press
riD
.
To clear the
entire automatic
memory
stack
,
including the
displayed X-
register
,
press
~
(clear
stack)
. This
replaces all
numbers
in the
stack with zeros
.
When
you
turn
the calculator 0 FF, then
ON
,
it "wakes up"
with all zeros
in the stack regi
sters
.
Although it
may be
comforting
,
it
is
ne
ver
necessary
to clear
the
stack or
the
displayed X -register when
starting
a new calcu-
lation.
This will
become
obvious when you see
how
old
results
in the
stack are
automatically lifted by
new entrie
s
.
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