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HP HP-25 User Manual

HP HP-25
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)
4 )
=
The
quantity
.
29
32169908.78
Area
of
Ganymede
in
square
miles.
Programmed
Problem
Solving
If
you
wanted
the
surface
areas
of
each
of
Jupiter’s
12
moons,
you
could
repeat
the
above
procedure
12
times.
However,
you
might
wish
to
write
a
program
that
would
calculate
area of
a
sphere
from
its
diameter,
instead
of
pressing
all
the
keys
for
each
moon.
To
calculate
the
area
of
a
sphere
using
a
program,
you
should
first
write
the
program,
then
you
must
record
the
program
into
the
calculator,
and
finally
you
run
the
program
to
calculate
the
answer.
Writing
the
Program:
You
have
already
written
it!
A
program
is
nothing
more
than
the
series
of
keystrokes
you
would
execute
to
solve
the
same
problem
manually.
Recording
the
Program:
To
record
the
keystrokes
of
the
pro-
gram
into
the
calculator:
1.
Slide
the
PRGM-RUN
switch
eron[[[Hll*~
to
PRGM
(program).
2.
Press
to
clear
the
calculator.
3.
Press
the
following
keys
in
order.
(When
you
are
record-
ing
a
program,
the
display
gives
you
information
that
you
will
find
useful
later,
but
you
can
ignore
the
display
for
now.)
)
1
B
S
These
keys
are
the
same
keys
you
pressed
to
solve
the
problem
manually.
B
R
Running
the
Program:
Slide
the
PRGM-RUN
switch
erev
T
=~
back
to
RUN
and
press
in
order
EHIE

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HP HP-25 Specifications

General IconGeneral
BrandHP
ModelHP-25
CategoryCalculator
LanguageEnglish

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