HP HP-16C User Manual

22 Section 2: The Automatic Memory Stack
Stack Lift No Stack Lift or Drop
lost
_—.>
—-—>
.—-——’
X
< N
-+
—
(shift left)
Stack Drop
t
BN
S e
z
T
z
Y
X 10 b
>
Keys
Typically, one-number functions (as defined in the previous
section) result in no stack movement, while two-number functions
usually result in a stack drop.
Notice the number in the T-register is regenerated when the stack
drops, allowing this number to be used repetitively as an automatic
constant.
Stack Manipulation Functions
Pressing separates two numbers keyed in one after the
other. It does so by lifting the stack and copying the number in the
display (X-register) into the Y-register. The number entered next
then writes over the value in the X-register; there is no stack lift.
The example below shows what happens as the stack is filled with
the hexadecimal numbers 1, 2, 3, 4. (The shading indicates that the
contents of that register will be written over when the next number
is keyed in or recalled.)

HP HP-16C Specifications

General

Brand	HP
Model	HP-16C
Category	Desktop
Language	English