4×4 keypad example using AVR-GCC C language

This is as simple routine how to read 4×4 keypad keys using AVR-GCC language. The keypad is connected to AVR microcontroller 8 bit port. In this example it is B port. You can change ports depending on your needs – this is only an example ant it is not the only way to this. Howt

4×4 keypad example using AVR-GCC C language is a post from: ATMega32 AVR