User Mode Operation; Program Stops And Pauses; Planned Stops During Program Execution - HP -11C Owner's Handbook Manual

88 Section 5: Programming Basics
User Mode Operation
Keystrokes Display
f)(USER}
User
Activates User mode;
USER annunciator
appears.
4a 2.0000
Program Stops and Pauses
whe he Yee ewe ve wv
Section 5: Programming Basics 89
you may want the program to pause so that you can quickly view
results before the program automatically resumes running. Two
keys, [R/S] (run/stop) and [PSE] (pause), are used for program
interruptions.
Planned Stops During Program Execution
When pressed from the keyboard:
1. Ifa program is running, [R7S) halts program execution.
2. Ifa program is stopped or not running, and the calculator is
in Run mode, pressing [R/S] starts the program running.
Execution then begins with the first line of program memory
following the [R7S) instruction. (When [R/S] is pressed and
held in Run mode, it displays the line number and keycode of
You can use these features of the [R/S]instruction to stop a running
program at points where you want to key in data. After the data
has been keyed in, restart the program using the (R/S) key from the
keyboard.
Example: Universal Tins, a can-
ning company, needs to calculate the
volumes of various cylindrically
shaped cans. Universal would also
like to be able to record the area of the
base of each can before the volume is
calculated.
The following program calculates the area of the base of each can
and then stops. After you have written down the result, the
program can be restarted to calculate the final volume. The
formula used is:
Volume = base area X height = mr? xh