HP 25 User Manual

PROGRAM Mode
Automatic RUN Mode
Active keys:
Pressed from Executed as a
keyboard: recorded program
instruction:
mJSinglestep.
mJ Single step.
Displays step
number
Displays step number
and contents of next
and keycode of
program memory step
current program
(page 81). memory step when
pressed; executes
instruction, displays
result, and moves to
next step when
r, eleased (page 92).
1m Back step.
1m Back step.
Displays step
number
Displays step number
and co ntents of
and keycode of
previous program
previous program
memory step
memory step when
(page 81).
pressed ;
displays
I PAUSE I Pause.
original contents of
X-register when
Stops program
released. No
execution for 1 second
instructions are
and
displays contents
executed (page 93).
of X-register, then
resumes program
Any key. Pressing any
execution (page 84).
key
on the keyboard
~§I I 1C=y l ~
stops execution of a
1@~ l x=o l ~
program.
Conditionals. Each
tests
va lue in x-register
against that in Y
-register or 0 as
indicated. If true,
calculator executes
instruction in next
program memory step.
If false,
calculator skips
next step (page 90).
I NOp l No operation.
Calculator executes
no operation and
continues program
execution seq uentially
with the instruction in
the
next program
memory step
(page 94).
7

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