The microcontroller is an exciting new device in the field of electronics control. It is a complete computer control system on a single chip. microcontrollers include EPROM program memory, user RAM for storing program data, timer circuits, an instruction set, special function registers, power on reset, interrupts, low power consumption and a security bit for software protection. Some microcontrollers like the 16F818/9 devices include on board A to D converters. The microcontroller is used as a single chip control unit for example in a washing machine, the inputs to the controller would be from a door catch, water level switch, temperature sensor. The outputs would then be fed to.
