Section 6: Programming Basics 69
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Run mode; no PRGM annunciator
displayed. (The display will depend
on any previous result.)
The position in program memory does not change when modes are
switched. Should the calculator be shut off, it always “wakes up” in
Run mode.
Executing a Program. In Run mode, press ´ letter label or G digit
(or letter) label. This addresses a program and starts its execution. The
display will flash running.
300.51
300.51
Key a value for h into the X-register.
´ A
7.8313
The result of executing program “A”.
(The number of seconds it takes an
object dropped from 300.51 meters
high to hit the ground.)
Restarting a Program. Press ¦ to continue execution of a program
that was stopped with a ¦ instruction.
User Mode. User mode is an optional condition to save keystrokes when
executing letter-named programs. Pressing ´ U will interchange
the ´-shifted and primary functions of the A through E keys. You
can then execute a program using just one keystroke (skipping the ´ or
G).
How to Enter Data
Every program must take into account how and when data will be
supplied. This can be done in Run mode before running the program or
during an interruption in the program.
1. Prior entry. If a variable value will be used in the first line of the
program, enter it into the X-register before starting the program. If
it will be used later, you can store it (with O) into a storage
register, and recall it (with a programmed l) within the
program.
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