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38
Simple Programming
Keystrokes
Display
25
25.0000
Enter the height into the
Y-register.
10
314.1593
Program stops to display the
area.
R/S
7,853.9816
Volume offirst can is
calculated.
8
8.0000
Enter the height into the
Y-register.
4.5
63.6173
Program stops to display the
area.
R/S
508.9380
Second volume is
calculated.
With the height in the Y-register and the radius in the X-register, pressing
in automatic RUN mode calculates the area of the can's base;
the program stops at the first
instruction encountered. Pressing
again calculates the volume of the can and program execution
stops at line 00.
In general, you should record
into a program when you need to
display more than one answer. To display only one answerof the final
answer of a series, the
00 instruction in a program is more
convenient since the calculator ends execution at line 00, ready to begin
again.
Pausing During Program Execution
An ][ 72055 instruction executed in a program interrupts program
execution to display results momentarily before execution is resumed.
The length of the pause is about one second, but you can use more than
one consecutive
instruction to lengthen the time.
To see how [/ 7U°¢ can 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 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.
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