CS Professional · Artificial Intelligence, Data Analytics and Cyber Security - Laws and Practice · Computer Hardware and Software
In a computer's von Neumann-style architecture, which component fetches instructions from memory, decodes them and directs the other units to execute them?
The Control Unit of the CPU fetches instructions from memory, decodes them and directs other components to carry them out. The ALU performs only arithmetic and logical operations and does not coordinate the execution of instructions.
- AControl Unit of the CPUCorrect
- BArithmetic Logic Unit
- CSecondary storage controller
- DGraphics output port
Explanation
The Control Unit fetches and decodes instructions and coordinates the other units. The ALU only performs arithmetic and logical operations on data it is given, so it does not direct execution.
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