Technopits

Integrated Circuit Which consist of A processor, Memories,Peripherals, Input & Output is termed as Microcontroller . That is it contain .

Processor for calculation needed in arithmetic and logical operations

Memory such as Read Only Memory (ROM) and Random Access Memory (RAM) for memory operations ,

Peripherals to support the processor and to extend its capabilities,

Input and Output to communicate with the world . Such as Key board for typing ,mouse for selecting , speaker

All the above terms together functioning is termed as a microprocessor and when it started working as system all together that system is termed as Microcontroller

The very first single-chip processor was built and proposed by Intel Corporation in 1971 under the name Intel 4004. It was a 4-bit central processing unit (CPU). As i can not mention all that processors you visit http://en.wikipedia.org/wiki/PIC_microcontroller for more information on the evaluation of processors

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