HP HP-25 - Page 89

To see how [ [Fause Jcan be used in a program, we’ll modify
the cylinder volume program in the previous example. In the
new program the area of the base will only be briefly displayed
before the volume is calculated. This example will also show
how different programming approaches can be taken to solve
the same problem.
To key in the program, set the PRGM-RUN switch to PRGM
encw ([~ and press [ crci] to clear program memory and
display step 00. Then key in the following list of keys.
Press Display
B
]
01
15
02
Squares
the
radius
in
X.
H
]
02
15
73
|
Places
7
in
X.
(] Calculates the area of the base.
Pauses
to
show
the
base
area
for
one second.
(x] Calculates final volume of can.
This program also assumes the height has been entered into the
Y -register and the radius has been keyed into the X-register. If
you have stored the instructions, set the PRGM-RUN switch
to RUN erew [l = and press [ 2G| so that the calculator
will begin execution from step 00. Now complete the table
below using the new program.
Height Radius Area of Base Volume
20 15 ? ?
10 5 ? ?
Press Display
20 Enter the height into the
Y -register.
15 Area of base is displayed for
one second.
Program stops, displaying the
volume.
10 10.00 Enter the second height into Y.