Which unit controls the movement of signals between CPU and I/O?
Verified Answer
A. ALU
B. Control unit
C. Memory unit
D. Secondary storage
E. None of these
Explanation:
The 'Control Unit' (CU) is the component within the CPU that is responsible for managing and coordinating all operations, including the flow of data and control signals between the CPU, memory, and Input/Output (I/O) devices. Option (b) 'Control unit' precisely performs this function. Option (a) 'ALU' performs calculations. Option (c) 'Memory unit' stores data. Option (d) 'Secondary storage' provides long-term data storage. Thus, the Control Unit is the orchestrator of signal movement.