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Multiplexed Key Matrix [403]

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This keypad matrix converts a key press into a specific analog value that is related to the SnapCPU for processing. Keypad matrix consists of 16 uniquely identifiable keys. By communicating using an analog value, only a single SnapCPU pin is required to be allocated for communications.

The KodeKLIX Blockly plug-in includes a special coding block for accurately reading the buttons.
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Power is connected to +v and the analog data representing the unique key press is available at one of the ADC connections. 
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® is a registered trademark of Coplin Corp Pty Ltd, Australia. Our educational products are designed, developed and assembled in Australia.
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