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Multiplexing LED Drive and a 4x4 Keypad Sampling

Posted: 30 May 2000 ?? ?Print Version ?Bookmark and Share

Keywords:microchip technology? pic16c5x? microcontroller? driver ic? led driver?

This application note describes a method that uses only 16 I/O pins of a PIC16C5X microcontroller to sample a 4-by-4 keypad, and directly drive four seven-segment LEDs.

View the PDF document for more information.

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