Interface Switch – 8051 I/O ports

You can interface switch on input/output port of 8051 micro controller. Ports are TTL (Transistor Transistor Logic) pins. Its has 0V or 5V on pin depending upon ON or OFF.  Give 5V supply to input port and connect switch to ground with respect to that port.

Connect your switch to port as shown above for better performance.

About Jagadesh Boopathi

I am tech savy spending more time on technology, learning about web, making time to find new stuff always. Also I am Entrepreneur, Blogger and an Engineer. Open Source - Matters.

View all posts by Jagadesh Boopathi →

Leave a Reply

Your email address will not be published. Required fields are marked *