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HP HP-20S - Sample Program: Pythagorean Theorem

HP HP-20S
132 pages
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Keys:
Display:
Description:
(=)
A
Moves
program
pointer
to
label
A.
5
5_
Enters
5
in
the
display.
(=)
(]
(hold)
01-
61 41
A
Label
A.
(release)
5.0000
(=]
[v]
(hold)
02-
51
11
Squares
input.
(release)
25.0000
(=]
(V]
(hold)
03-
55
Multiplies
25
by
...
(release)
25.0000
(9]
(v]
(hold)
04-
61
22
..
(release)
3.1416
(=]
[v]
(hold)
05-
45
Calculates
intermedi-
(release)
78.5398
ate
result.
(\)
(]
(hold)
06-
4
...+~
4.
(release)
4_
(=)
(Y]
(hold)
07-
74
—
(release)
19.6350
(=]
(V]
(hold)
08-
61
26
End
of
program.
Result
(release)
19.6350
is
correct.
Sample
Program:
Pythagorean
Theorem
You
can
use
most
of
the
HP-20S
features
in
Program
mode
just
like
you
use
them
manually.
To
illustrate
how
and
are
used
to
recall
data
from
registers
in
a
program,
enter
the
following
Pythago-
rean
theorem
program.
It
calculates
the
length
of
the
hypotenuse
(side
c)
of
a
right
triangle,
given
the
lengths
of
sides
a2
and
b.
The
formula
used
is
¢
=
\/a?
+
b2.
Assume
that
the
calculation
begins
with
side
a
in
R;
and
side
b
in
R,.
6:
Programming
73

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