Another important component/functional part of CPU is Control unit.CU control all devices which are used in computer system whether it are ...
Another important component/functional part of CPU is Control unit.CU control all devices which are used in computer system whether it are input devices(like mouse,keyboard etc.),output devices(like printer,plotter etc.) etc.It also control the flow of data from one machine to another machine.
In simple words all supervises task/functions are perform by control unit.Some another important task are:-
Fetch Phase:-In Fetch phase,SC=0,AR<--Pc,IR<--M[AR] then PC<--PC+1.
Decode Phase:-In decode phase we decode operation code and perform AR<--IR and I<--IR operations.
Decision Phase:-In decision phase we decide where the instruction goes.
Execute Phase:-In this phase we execute instructions.
In simple words all supervises task/functions are perform by control unit.Some another important task are:-
Fetch Phase:-In Fetch phase,SC=0,AR<--Pc,IR<--M[AR] then PC<--PC+1.
Decode Phase:-In decode phase we decode operation code and perform AR<--IR and I<--IR operations.
Decision Phase:-In decision phase we decide where the instruction goes.
Execute Phase:-In this phase we execute instructions.
That's all about Control Unit in CPU and its programs,if you have any query then leave your comments and don't forgot to follow me on Google+,Facebook,Twitter.
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