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HP 25 User Manual

HP 25
132 pages
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Programming 83
Stopping Program Execution
~
works
differently
as
an
executed
instruction
in a
program
than
it
does
when
pressed
from the
keyboard
.
As
an
executed
instruction,~stops
program
execution
, allowing
you
to
key
in
new
data
or
to write
down
an
intermediate
result.
When
I RIS I
is
then
pressed
from the
keyboard
in
automatic
RUN
mode,
the
calculator
continues
execution
sequentially
down-
ward
.
Exa
mp
le Progra
m.
Universal
Tins,
a
canning
company,
needs
to
calculate
the
volumes
of
various cylindrically-shaped
cans.
Universal
wou
ld also like to be able to
record
the
area
of
the
base
of
each
can
before
the volume
is
calculated.
One
pro-
gram to solve this
problem
follows.
This
program
calculates
the
area
of
the
base
of
each
can
and
then
st
ops
.
When
after
you
have
written
down
that
result,
the
program
can
be
restarted
to
calcula
te
the
final vol
ume.
The
formula
used
is:
Volume
=
base
area
x height =
17'r
2 x h
The
radius
(1')
and
the
height
(h)
of
the
can
are
keyed
into the
x-
and
Y -registers, respectively,
before
the
program
is
run.
To
r
ecord
this
program,
set the
PRGM
-
RUN
switch
to
PRGM
PRGM
mill
RUN
and
press
a I
PRGM
I to
clear
program
memory
and
display
step
00.
Then
key
in
the following list
of
keys.
Press
Display
liI 0
01
15
02
Square
the radius.
liI0
02
15
73
Place
17'
in
X.
0
03
61
Calculate
the
a
rea
of
the
base.
~
04
74
Stop
to
record
the area.
0 05
61
Calculate
the final volume.
In
order
to run this
program
set
the
PRGM
-
RUN
switch
to
RUN
PRGM.mIl
RUN
and press a I
PRGM
I so
that
the
calculator

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HP 25 Specifications

General IconGeneral
Power SourceRechargeable battery pack
Programming Steps49
Release Year1975
FunctionsTrigonometric, logarithmic, statistical
TypeScientific
Dimensions148 x 80 x 14 mm

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