IT Topic4

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Tuesday, 11 February 2020

CPU, Control Unit, ALU,



CPU:
It consist of three parts
1.Control unit
2.Arithimatic Logic Unit (ALU)

3.chache


Control unit:
It do all type of control functions for example coordination of all other parts, usage of RAM, controling ports input etc. 

Image result for Control unit


ALU:
It is consist of two parts
1.Arithmetic unit
2.Logic unit
arithmetic unit do  all the mathimatical operations like addition and subtraction

Logical unit do operation like AND OR NOT etc that involves some type of logic.
Image result for ALU


Cache:
Cache is personal storage of CPU.
When CPU is working on some data, it temporarily stores its result in the cache before it go to the output.

Cache is fastest memory in computer but its size is very small, usually 3kb to 2 MB.


Image result for cache


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