Definition of Microprocessor,Microcontroller and Differences between microprocessor and microcontroller

Microprocessor :Microprocessor is a programmable integrated device that has computing and decision –making capabilities similar to that of the Central Processing Unit (CPU) of a computer. Also called a CPU on a chip.

Microcontroller: A single chip that contains the processor (the CPU), non-volatile memory for the program (ROM or flash), volatile memory for input and output (RAM), a clock and an I/O control unit. Also called a computer on a chip.

Features of Microprocessor and Microcontroller: Small Size

Lower Cost, Higher Reliability, Low power consumption ,High Versatility ,More powerful.

Difference Between Microprocessor and Microcontroller:

	Microprocessors	Microcontrollers
Hardware architecture	Microprocessor is a  single chip CPU	Microcontrollers contains, in a singles IC, a CPU and much of remaining circuitry of a complete microcomputer system, like RAM , ROM,a serial interface, a parallel interface, timer, and interrupt scheduling circuitry all within in the same IC
Applications	Microprocessors are most commonly used as the CPU in microcomputer systems. They are suited to  processing information in computer systems.	Microcontrollers are found in small, Minimum component designs performing control oriented activities. They are suited to control of I/O devices in designs requiring minimum component count.
Instruction set features	Instruction  sets are processing intensive implying they have powerful addressing modes with instructions catering to operations on large volumes of data. Their instructions operate on bytes, words and double words. Addressing modes provide access to large arrays of data, using address pointers and offset.	Microcontrollers have instruction sets catering  to the control of inputs and outputs. Microcontrollers have instructions to set and clear individual bits and perform other bit oriented operations such as logically ANDing, ORing or XORing bits. The instructions are highly compact. The majority of instructions are implemented in a single byte.
Example	8085,8086, 80286 . . .	8048, 8051