HP HP-65 - Page 7

fined as shown in the window above the top row.
Alternate functions may be keyed in or read
from a magnetic program card. Pressing a top
row key finds the function and executes it.
To Write a Function: identify the beginning by
followed by the top row key that is to call
it. End the function with GI]. Example:
3 ((ENTERY ENTER® ¢ %)) The keys in
parentheses calculate x*, Keying in a function:
® Set W/PRGM-RUN switch to W/PRGM. ®
Press 'f| "7V to clear program memory. ®
Press the keys in the order shown ([ERA . .
in the sample case). If you make a mistake,
press & (to delete the error) and press the
correct key. To execute the function (from key-
board): ® Set W/PRGM-RUN switch to RUN.
® Press the appropriate top row key. For the
sample case, to compute 2* — 8, press 2[@; to
compute 3* — 27, press 3 @; etc. A user
defined function can also be executed from a
program by merely including the corresponding
top row key in the program. Revising (Editing) a
Program. To move the pointer to the top of
memory, press LRl in RUN mode. To
move the pointer to a label, press (in RUN
mode) [f]] [n] where n is the same digit or top
row key as in [n] (the label). To step