HP 25 User Manual

78 Programming
Running a Program
Programs are executed in automatic RUN mode. So first set
the PRGM-RUN switch to RUN PRGM .-D
RUN
• Next press
mm @]@] . This operation resets the calculator so that program
execution will begin from step 00 (Pressing D I PRGM I in
RUN mode accomplishes the same thing.) Then, key in a value
for a
diameter and press [E§J in R UN mode to run your program .
The operations stored in program memory are executed
sequentially downward from ste p 00. First step 01 is executed,
then step 02 , then step 03 , and then step 04, which now contains
a special instruction , mm @] @] .
GTO 00
The am @] @] instruction in step 04 is not an in struction you
keyed
in yourself. It was already there. If you press D I PRGM I
in PRGM mode or if you switch the calculator OFF and ON
again, program memory is filled with am @] @] instructions.
The three-step program you keyed in replaced three of these
instructions. Program memory was changed as shown
in the
following illustration.
When you keyed in your program . ..
00
01
02
03
04
05
~
47
48
49
13 00 ,
13
00
13 00
13 00
13 00
13 00
-
13 00
13 00
13 00
. . . program
memory
changed .
..
..
. from this . ..
t(
.. . to this.
00
01
15 02
02 15
73
03
61
04
13 00
05 13 00
~
13 00
47 13 00
48
13 00
49 13 00

HP 25 Specifications

General

Power Source	Rechargeable battery pack
Programming Steps	49
Release Year	1975
Functions	Trigonometric, logarithmic, statistical
Type	Scientific
Dimensions	148 x 80 x 14 mm