HP HP-67 - Page 67

11
17
X
<N
- X
< N
-
X
<N
=
X
<
N
-
X
<N
-
The Automatic Memory Stack 63
0.00
0.00
0.00
46.00
0.00
0.00
46.00
11.
0.00
0.00
0.00
57.00
0.00
0.00
57.00
(17,
0.00
0.00
0.00
74.00
16 and 30 are added
together. The answer,
46, is displayed.
11 is keyed into the
displayed X-register.
The 46 in the stack is
automatically raised.
46 and 11 are added
together. The answer, 57,
is displayed.
17 is keyed into the
X-register. 57 is
automatically entered
into Y.
57 and 17 are added
together for the
final answer.
After any calculation or number manipulation, the stack automatically
lifts when a new number is keyed in. Because operations are per-
formed when the operations are pressed, the length of such chain
problems is unlimited unless a number in one of the stack registers
exceeds the range of the calculator (up to 9.999999999 X 10%).