►Keypad Connections with AVR Microcontroller

[lightbox=keypad-avr.gif|Keypad connections with AVR Microcontroller|Keypad Interfacing]

[/lightbox]

Please click on the image to enlarge it
Circuit shown above is for demonstration and does not include any reset and crystal circuit. For practical use you need to have a reset circuit and crystal.


►Keypad Connections with 8051 Microcontroller

[lightbox=keypad-8051.gif|Keypad connections with 8051 Microcontroller|Keypad Interfacing]

[/lightbox]

Please click on the image to enlarge it
Circuit shown above is for demonstration and does not include any reset and crystal circuit. For practical use you need to have a reset circuit and crystal.

◄ Introduction  |  8051 Program ►