Hi
Here are two projects that might help you:
1.https://www.engineersgarage.com/microcontroller/8051projects/interface-keypad-AT89C51-circuit
2.https://www.engineersgarage.com/embedded/avr-microcontroller-projects/interfacing-keypad-circuit
Hi
Here are two projects that might help you:
1.https://www.engineersgarage.com/microcontroller/8051projects/interface-keypad-AT89C51-circuit
2.https://www.engineersgarage.com/embedded/avr-microcontroller-projects/interfacing-keypad-circuit