Q1. There are THREE (3) main sources of interrupt in a process while the system is running the main program.

a). Design an anti-theft system to be used at the window as in Figure QI which requires an external source for the interrupt so that the system able to power on a buzzer and a light (which can be represented as one LED) when interrupted by using one source of the interrupt. Justify your answer on the interrupt method selection. (15 marks)

b) Sketch the design for the security system. Ignore the basic circuitry (the crystal clock, reset and power & ground) requirements. (10 marks)

*microcontroller used is PIC16F877A

This is microcontroller subject related

Direction movement Window To Microcontroller Circuit DP Switch Figure Q1 Direction movement Window To Microcontroller Circuit DP Switch Figure Q1