MICRO-PROCESSOR

WHAT IS MICRO-PROCESSOR

Micro-processor is the main coordinating unit in a computer also is the controlling element in a computer system and it is sometime referral to as C.P.U. one can classify micro-processor leased on the period they were designed. Its classification ranges from 1st generation to six generation currently and as technology advances it gives room for improvement respectively.

1. First generation 1971-1978
2. Second generation 1979 – 1985
3. Third generation 1985 – 1989
4. Fourth generation 1990
5. Five generation
6. Six generation

Micro-processor is a multipurpose programmable logic device that reads binary instructions from memory. It accepts input data in bits, or byte format, process the data and present the output.
The components required for a functional micro-processor application are memory unit, input and output unit, C.P.U.
Ranging from the smallest intelligent electronic circuit to the most sophisticated industrial automation the role of micro-processor cannot be over emphasized.
Microprocessor is a CPU on a chip
Microcontroller is a computer on a chip

Evolution of Microprocessor

The evolution of microprocessor can be best explained in three branches; listed below are the branches
• Microcontroller branch (embedded system)
8048, 8051, 8096 are examples of Intel processor
• Main branch (multipurpose processor)
• Special purpose (DSP)
Examples special purpose are TMS320, GSP2920, communication processor etc.

Main branch
General purpose microprocessor is typically used for making computer
4bits – 8bits – 16bits – 32bits – 64bits. Examples of main branch; 4004, 8008, 8080, 8085 etc.

8008 microprocessor

Features that make Microprocessor and controller powerful
• Small size – miniaturization
• Lower cost
• High reliability
• Lower power consumption (CMOS technology)
• High versatility
• More powerful.

APPLICATIONS
Main branch C.P.U
General purpose microprocessor
• Desktop
• Laptop
• Workstation, super computers 32bits or 64bits microprocessor.