keypad

Keypad scanner. Displays value of key on 7seg

Getting Started

Requirements

• Keil IDE
• Flash Magic
• 8051 microcontroller
• Driver ULN 2803
• 7-segment displays (x4)
• Buzzer
• Hex keypad

Installing

1. Connect 7-segment displays to the 8051 microcontroller as shown in the following diagram:
2. Connect hex keypad to the 8051 microcontroller as shown in the following diagram:
3. Connect buzzer to P1.5 of the 8051 microcontroller
4. Open Keil and create new project
   • Choose Philips P89V51RD2 database
5. Add keypad.c file to Source Group
6. Build target
7. Use Flash Magic to write the resulting hex file to the 8051 microcontroller

Example

Pushing hex C on the keypad, the value 'C' is displayed

Authors

• Sahil Mahajan

License

This project intentionally has no license.