Stack Manipulation Functions - HP -11C Owner's Handbook Manual

Section 2: Memory Stack, LAST X, and Data Storage 27
calculations), pressing the indicated keys would result in the stack
arrangement shown on the right of each illustration.*
Stack Lift No Stack Change
lost
T+ ?: 2 T 1
Y>> / 4 Y| 3
X I—-V 789 X=| 4
Keys ¥ 789 Keys
Stack Drop
T+
zZ+
Y
Keys
Stack Manipulation Functions
separates two numbers keyed in one after the other. When
is pressed the calculator lifts the stack by copying the
number in the displayed X-register into the Y-register. For
example, to fill the stack with the numbers 1, 2, 3, 4 (assume that
the stack registers have already been loaded with the numbers
shown as the result of previous calculations):
lost
lost lost
T 8 7 || 7 6
Z-> 6 |—| 6 1
Y= 1 —- 1 2
X=> 1] L2 2
Keys 1 2
(Illustration continued on next page.)
* To simplify the illustration of features described in this section, a single-digit number
format is used in most of the diagrams instead of the decimal number ([FIX] 4) format
used elsewhere in this handbook.