Table of Contents
Advertisement
The HP-25 Means Painless Programming
11
Now all you have to do to calculate the
area
of
any
sphere is key
in the value for its diameter
and
press
the~
(run /stop)
key
.
When you press
~
the
sequence
of keystrokes you recorded
is
automatically
executed by the
calculator,
giving you the
same
answer you would have obtained manually:
For example, to calculate the area of
Ganymede:
Press
Display
3200
13200.
~
132169908.78
1
Square
miles.
With the program you have recorded,
you
can now calculate the
area of
any
of
Jupiter'
s
moons-in fact, of
any
sphere-using
its diameter. You have
only
to leave the
calculator
in RUN
mode
and
key in the
diameter of
each
sphere
that you wish to
compute,
then press
~.
For
example
,
to
compute
the
surface
area
of Jupiter
'
s moon 10 with
a
diameter of 2310 miles:
Press
Display
231
0
~
116763852.56
1
Square
miles
.
For the moons
Europa,
diameter 1950 miles
,
and Callisto,
diameter 3220 miles:
Press
1950~
3220~
Display
1
11945906.07
132573289.27
Area
of
Europa in
square
miles.
Area of
Callisto in
square
miles.
Programming the HP-25 is that easy!
The calculator
remembers
a series
of keystrokes
and
then executes them when you press
the~
key.
The
early
portions
of
this handbook
show you
how easy it is to
manually use the power
of the
HP-25; while
in section
5,
Pro-
gramming,
you will
find
a complete
guide to HP-25 calculator
programming. Even if you have used other pocket calculators
or programmed large
computers,
you will want to take
a good
look
at
this handbook
.
It
explains
the unique HP logic
system
that makes simple answers out
of
complex problems
,
and
HP-25 features that make
programming painless.
When you see
the
simple
power
of your
Hp-25
,
you'll
become
an
apostle just
as have some 700 ,000 HP calculator owners before you.
Hide quick links:
Advertisement
Table of Contents
