MICRO CONTROLLER

• The micro-controller similar to microprocessors, But they are designed to work as a true single chip system by integrating all the devices needed for a system on a chip
• The basic functional units of a mp will be ALU, a set of registers,timing & control unit. the basic micro-controller will have these functional blocks & in addition may have I/O ports,programmable timer,RAM memory & EPROM/EEPROM memory
• The micro-controller is concerned with rapid movement of code & data within microcontroller: hence it has few instruction for data transfer between external memory & micro-controller
• The mc often manipulate with bits & so has large number of bit manipulating instruction 
• The mc can be used to form a single chip microcomputer based system without any additional ICs
• MC are used for designing application specific dedicated systems