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How to write a simple program to add two numbers together on a GDC (graphical display calculator). This explanation uses the TI-82/83/84 calculators.

1. Press PRGM to select the program entry menu.
2. Select NEW, enter the name "ADD" and begin entering the program line by line.
3. Once the program is completed, quit then select PRGM again and the program name "ADD".

You will be prompted for the values of A and B, then the sum will be displayed.
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Glossary

gdc

graphic display calculator

union

The union of two sets A and B is the set containing all the elements of A and B.

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