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Meaning of CENTRAL PROCESSING UNIT

 
WordNet Dictionary
 
 Definition: 
[n]  (computer science) the part of a computer (a microprocessor chip) that does most of the data processing; the CPU and the memory form the central part of a computer to which the peripherals are attached
 
 Synonyms: C.P.U., central processor, CPU, mainframe, processor
 
 See Also: computer, computer hardware, computing device, computing machine, CPU board, data processor, electronic computer, electronic equipment, hardware, information processing system, mother board

 

 

Computing Dictionary
 
 Definition: 

(CPU, processor) The part of a computer which controls all the other parts. Designs vary widely but, in general, the CPU consists of the control unit, the arithmetic and logic unit (ALU) and memory (registers, cache, ram and rom) as well as various temporary buffers and other logic.

The control unit fetches instructions from memory and decodes them to produce signals which control the other part of the computer. This may cause it to transfer data between memory and ALU or to activate peripherals to perform input or output.

A parallel computer has several CPUs which may share other resources such as memory and peripherals.

The term "processor" has to some extent replaced "CPU", though RAM and ROM are not normally considered as part of a processor. This is particularly true of common modern microprocessors though there have been microprocessors which include RAM and/or ROM on the same integrated circuit.

The cpu info center lists many kinds of CPU.

 

 

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