From this video you will learn how to use PIC16F877A external interrupt. This video describes how to write the main and ISR code for PIC16F877A. This also describes the circuit to be used. And finally the output is being simulated in Proteus software. The text to speech audio has been used for easy understanding of all the users across the globe. In this video a switch has been used as the interrupt source and LED is toggling as the result of the interrupt.
