Which unit controls the movement of signals between CPU and I/O? ALU Control Unit Memory Unit Secondary Storage None of these
Question
Which unit controls the movement of signals between CPU and I/O?
- ALU
- Control Unit
- Memory Unit
- Secondary Storage
- None of these
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Answer
The correct option is Control Unit.
The Control Unit (CU) is responsible for directing the flow of signals between the CPU and Input/Output (I/O) devices. It acts as the intermediary, ensuring that instructions are executed in the correct sequence and that data is transferred smoothly between the CPU and peripheral devices.
Memory Unit does not control signal movement; it primarily stores data and instructions for processing. The Arithmetic Logic Unit (ALU) handles arithmetic and logical operations, not signal movement. Secondary Storage is used for long-term data storage and also does not control signal movement.
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