Design and Simulation of Personal Computer Base Walls Crossed Security System Against Intrusion Using PIC Microcontroller

We are living in a global computer age today were by every electronic appliance can be attaches or control by Computer or to say a personal computer. In this research, a reliable and cost less home security system was developed to secure any of the walls that were crossed. These walls are the north wall, east wall, south wall and finally the west wall. These walls are designed to be in a square environment, each of this walls has a Light Emitting Diode (LED) that function as a transmitter and a Light Dependent Resistor (LDR) that function as a Receiver. A closed circuit Television (CCTV) was used to capture the real-time video of any of the crossed wall. A Liquid Crystal Display (LCD) was used to display the status of these walls and display the name of the crossed walls. A magnetic buzzer was also used to alert the security personnel after a system has displayed the name of the crossed wall on the Liquid Crystal Display (LCD). A Microcontroller (PIC16F877A) is used as the brain of the developed security system. The Personal Computer (PC) is also used to display the system status through personal computer (PC) Parallel Port, to display the real-time video captured by CCTV camera, saving the video on personal computer (PC) hard drive, and also to control the developed system from the personal computer (PC) such as activating, deactivating and resetting the developed system. Keywords -Closed-circuit television (CCTV), Home Security System, Liquid Crystal Display, Personal computer(PC), Parallel Computer (PC) Parallel Port, Real-time video.