Introductory Program - HP 25 Owner's Handbook Manual

Programming 75
Introductory Program
The area of a sphere program you wrote , recorded , and executed
in the introduction showed you that the sequence of keystrokes
used to solve a problem manually is the same sequence used in
a program . Now let' s return our attention to that program to
explain the information displayed in PRGM mode .
First, set the PRGM- RUN switch to PRGM
PRGM'-RUN
so that the sequence of keys trokes will be recorded for later
executio n. Second , pre ss
D I
PRGM
I
to c lear the calculator
of previo us programs. The display will show:
I
00
T his tell s you that yo u are at the beginning of program memory.
Step 00 contains an automatic stop instruction and cannot be
used to record your program key strokes . Program keystrokes
are recorded in steps 01 through 49. (See figure below.)
Stack
Storage
W
Ro
R,
R,
ILASTX I
R3
R.
Rs
R6
R7
Program Memory
Step 00
Step 01
Step 02
r---....
..........
Step 46
Step 47
Step 48
Step 49