What are the three primary components of a CPU and what does each do?

What are the three primary components of a CPU and what does each do?

• A. Cache stores firmware; RAM holds data temporarily; ROM holds data permanently.
• B. ALU stores data; CU executes programs; RAM is for graphics.
• C. Arithmetic Logic Unit performs calculations and logic operations; Control Unit fetches, decodes, and coordinates instruction execution; Registers hold data and addresses temporarily during processing.
• D. Motherboard chipset controls power; CPU timers manage speed; GPU handles storage.

Answer: (C)

Three main parts work together inside a CPU: the Arithmetic Logic Unit performs calculations and logic operations; the Control Unit fetches instructions from memory, decodes them, and coordinates what the other parts should do; and registers are small, fast storage locations that hold operands, intermediate results, and addresses during processing. The Control Unit directs data to the ALU and moves results into registers or memory as a program runs, enabling correct sequencing and timing of operations. This combination—calculation, control, and quick storage—explains how a CPU carries out instructions efficiently. Other descriptions misstate roles, such as saying the ALU stores data or that RAM is solely for graphics, which aren’t accurate representations of how the CPU’s internal parts function.

Three main parts work together inside a CPU: the Arithmetic Logic Unit performs calculations and logic operations; the Control Unit fetches instructions from memory, decodes them, and coordinates what the other parts should do; and registers are small, fast storage locations that hold operands, intermediate results, and addresses during processing. The Control Unit directs data to the ALU and moves results into registers or memory as a program runs, enabling correct sequencing and timing of operations. This combination—calculation, control, and quick storage—explains how a CPU carries out instructions efficiently. Other descriptions misstate roles, such as saying the ALU stores data or that RAM is solely for graphics, which aren’t accurate representations of how the CPU’s internal parts function.