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What Is Control Unit ?
Control Unit Functions
How Control Unit Works ?
Control Unit In Computer Organization And Architecture.

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What Is Control Unit ?
The control unit is abbreviated as CU, and it is an internal component of the microprocessor architecture.
The control unit generates the necessary control signals to execute the program instructions and to control the various operations performed by the processor.
The control unit performs, two important functions.
First, it decodes the program instructions, so that, the processor can operate on the data.
The control unit also controls the processing speed of the processor and the various operations performed by the processor.
However, in order to understand, what is control unit, and its functions in computer architecture we need to first study how the microprocessor works.
The microprocessor, is said to be the brain of the computer system.
It is the processor, that provides, the processing power, to the computer.
In computer architecture, the microprocessor is responsible to perform two main functions.
The program execution is the first function of the CPU.
And, controlling the operations of the computer system is the second important function of the CPU.
In order to executes the program instructions, the CPU has to repetitively perform, the instruction cycle.
The instruction cycle, is the basic operation of the CPU.
Each instruction cycle consists of, four independent C P U operations.
Which includes the fetch operation, decode operation And the execute operation.
The control unit, plays an important role in the execution of the instruction cycle.
The control unit handles, the decode operation of the instruction cycle.
The control unit is also responsible to regulate the speed of the instruction cycle by regulating the clock speed.
The processor also performs, all the arithmetic calculations, and the logical operations, necessary to execute the, program instructions.
The control unit, is a part of the microprocessor, and it is responsible handle, all the control operations, performed by the processor.
The control unit, controls the operations of the various hardware components, by generating the control signals.
These control signals, are transmitted to the hardware components, along the network of control buses.
The control bus, is a wired connection between the processor and the hardware component which carry the control signals.

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