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Keypad Scanning Hardware/Firmware

Mike Hankey

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14 Jan 2011CPOL7 min read

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Scan any size switch matrix using 5 general purpose I/O ports.

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This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Written By

Mike Hankey

Retired

United States

Currently enjoying retirement and working on projects without pressure, deadlines or any kind of management.

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