4x4 Matrix Keys & Multiplexed 7 segment Display Interfacing with 8051 with C-Code & Hardware Demo

1. Circuit Diagram for interfacing 4x4 Matrix Keyboard with 8051 Microcontroller
2. Concept of Identifying the Key Press in Matrix Format
3. C-Program for identifying the Key press in 4x4 Key Matrix
4. Simulation of the same in KEIL IDE
5. Testing the Key Press Identification in Hardware Development Kit
6. Displaying the Key Press Value in 7-Segment Display