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Question

The control unit of a microprocessor _________________.

A
Stores data in the memory
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B
Accepts input data from a keyboard
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C
Performs arithmetic / logic / functions
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D
All of the above
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E
None of the above
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Solution

The correct option is E None of the above

The control unit (CU) is a component of a computer's central processing unit (CPU) that directs the operation of the processor. It tells the computer's memory, arithmetic/logic unit and input and output devices on how to respond to a program's instructions.

The basic functionality of the Microprocessor is to do processing. Microprocessor performs two type of operations called Arithmetic and Logic. So the basic functionality unit which consists of Arithmetic ( Addition, Subtraction, Multiplication & Division) and Logic (AND, OR, NOT) is called Arithmetic Logic Unit.

The Central Processing Unit (CPU) is also known as the microprocessor or processor. The processor contains three sections called the Arithmetic Logic Unit (ALU), the Control Unit and Registers. Control unit: The Control Unit makes decisions and sends the appropriate signal down its lines to other parts of the computer.



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