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HP HP-25 User Manual

HP HP-25
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The
HP-25
Means
Painless
Programming
Your
HP-25
is
a
versatile,handheld
electronic
calculator
that
uses
the
powerful
Hewlett-Packard
logic
system
to
compute
answers
to
complex
mathematical
problems
in
either
of
two
modes:
=
Manual
problem
solving.
You
work
step-by-step
through
the
toughest
of
problems,
choosing
from
among
the
dozens
of
functions
available
to
calculate
the
correct
answer
quickly
and
easily.
=
Programmed
problem
solving.
The
HP-25
memorizes
a
sequence
of
up
to
49
different
functions
as
you
press
them,
and
then
repeats
that
sequence
automatically
as
often
as
you
wish
to
solve
a
particular
type
of
problem.
That’s
all
there
is
to
it!
A
program
is
nothing
more
than
a
se-
quence
of
manual
keystrokes
that
is
remembered
by
the
calcu-
lator.
You
can
then
execute
the
program
as
often
as
you
like.
No
prior
computer
programming
experience
is
necessary
for
HP-25
calculator
programming.
To
see
the
close
relationship
between
the
manual
solution
to
a
problem
and
a
programmed
solution,
let’s
solve
a
problem
manually,
and
then
use
a
program
to
solve
the
same
problem
and
others
like
it.
Manual
Problem
Solving
To
calculate
the
surface
area of
a
sphere,
the
formula
4
=
7
d*
can
be
used,where:
4
is
the
surface
area,s
is
the
value
of
pi,
3.1415...,
and
d
is
the
diameter
of
the
sphere.
Ganymede,
one
of
Jupiter’s
12
moons,
has
a
diameter
of
3200
miles.
To
use
the
HP-25
to
manually
compute
the
area
of
Ganymede,
you
can
press
the
following
keys
in
order:
First,
slide
the
calculator
o
EE[[ov
switch
to
ON,
and
slide
the
rrem
mfl]flfl]
an
SWitch
to
RUN.
Then
press
Display
Diameter
of
Ganymede.
=
10240000.00)
Square
of
the
diameter.
9

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HP HP-25 Specifications

General IconGeneral
BrandHP
ModelHP-25
CategoryCalculator
LanguageEnglish

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