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The Lexidata Joystick and switches

The Lexidata joystick has six switches. These are labelled, from left to right, EXIT, MODE, DOWN, RESET, UP and READ. All Lexidata programs that use the switches light up only those which they use and give each switch an interpretation which is in the general spirit of its label. The general meanings are:-

1. EXIT - Exit from the program
2. MODE - Cycle through various options presented by the program
3. DOWN - Decrease some quantity or quantities
4. RESET - Reset some quantity or quantities
5. UP - Increase some quantity or quantities
6. READ - Read the cursor position

Notes

It is always the change in state that is important, never the actual position of the switch.