  Over the years, access control systems have become more and more
sophisticated and several security measures have been employed to combat the
menace of insecurity of lives and property. This is done by preventing
unauthorized entrance into buildings through entrance doors using conventional
and electronic locks, discrete access code, and biometric methods such as the
finger prints, thumb prints, the iris and facial recognition. We have designed
a flexible and low cost modular system based on integration of keypad, magnetic
lock and a controller. PIC 16F876A which is an 8-bit Microcontroller, is used
here as a main controller. An advanced simulation based compiler Flowcode V4 is
used to develop the software part in this project.
