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110
Function Keys
To use only the 3x and 2y that you have accumulated in the secondary
storage registers, you can press
followed by 23 . This brings 2x
into the displayed X-register and 3y into the Y-register, overwriting
the contents of those two stack registers. The stack does not lift. (This
feature is particularly useful when performing vector arithmetic, like
that illustrated on pages 118-120.)
To use any of the summations individually, simply exchange the
contents of the secondary storage registers with the primary registers
by pressing (£5); then recall the desired summation by pressing
followed by the number key of the register address.
Example: Find 2x, 2x2, 3y, 3y?, and 3xy for the paired values of
x and y listed below.
Press
Display
0B Crea) @
Ensures that storage
registers Rg, through Rgg
contain all zerosinitially.
(Display assumes no
results remain from
previous example.)
7
5
First pair is accumulated;
5
T
3
2.00
Second pair is accumu-
.
o
lated; n
2.
8
Third pair is accumu-
lated; n = 3.
a
3.00
Brings contents of
secondary registers into
primary registers.
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