CS Professional · Artificial Intelligence, Data Analytics and Cyber Security - Laws and Practice · Computer Hardware and Software
A company secretary is told that the server's CPU fetches an instruction from memory, decodes it and then carries it out. Which component of the CPU interprets the instruction and directs the other units to act on it?
The Control Unit is the CPU component that decodes a fetched instruction and directs other units to execute it. The ALU merely performs arithmetic and logical operations on instruction, and cache memory only holds frequently used data for faster access.
- AArithmetic Logic Unit
- BControl UnitCorrect
- CCache memory
- DMotherboard chipset
Explanation
The Control Unit decodes the fetched instruction and issues signals to coordinate other units. The ALU only performs arithmetic and logical operations once directed, so it is not the decoder. Cache only stores data close to the CPU.
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