4×4 Matrix Key-board Interfacing with ATmega32

Here is a project for beginners to interface a 16-key (4×4) keypad with ATmega32 using 8-pins i.e. one port of the microcontroller. This is useful particularly where we need more keys but don’t want to spend more uC pins for interfacing. The 4×4 keypad is a standard one available in the market. I’ve used here […]

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