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HP HP-25 User Manual

HP HP-25
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tions
one
at
a
time.
When
you
hold
the
g
key
down
in
RUN
mode,
the
program
step
number
and
keycode
are
displayed.
When
you
release
the
key,
the
instruction
is
executed.
Use
B3l
on
the
simple
area
of
a
circle
program
shown
below
to
familiarize
yourself
with
its
operation.
Example
Program.
This
program
calculates
the
area
of
a
circle
using
the
formula:
4
=
7r*
where
r
is
the
radius.
Set
the
PRGM-RUN
switch
to
PRGM
erew[[[[Ml~~
and
press
|
to
clear
program
memory
and
display
step
00.
Then
key
in
the
list
of
keys
shown
below.
Press
Display
a
01
__15
02
a
0215
73
03
61
The
program
assumes
that
a
value
for
r
has
been
keyed
into
the
X-register.
To
run
the
program,
set
the
PRGM-RUN
switch
back
to
RUN
encu
Bl
»n
and
press
|
.
Now
step
through
the
program
in
slow
motion
using a value of
10
for
r.
Press
Display
10
el
When
you
hold
B
down,
the
first
instruction
is
displayed.
i
When
you
release
B34,
the
first
instruction
is
executed.
sl
Again
holding
Eg@
down
displays
the
second
instruction.
Again
releasing
Ejexecutes
the
second
instruction.
S
Holding
&
down
displays
the
third
instruction
this
time.
And
releasing
g3
executes
the
third
instruction.
You
can
see
that
it
would
be
easy
to
spot
a
mistake
in
your
pro-
gram
using
the
B3
key.

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HP HP-25 Specifications

General IconGeneral
BrandHP
ModelHP-25
CategoryCalculator
LanguageEnglish

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