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8051 microcontroller 8051 microcontroller
Martix Keypad Interfacing with Microcontrollers: Connection Diagram


►Keypad Connections with AVR Microcontroller

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

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.

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