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A program sends a command to the CPU to add two numbers. Which hardware component actually performs the addition?

medium📝 Analysis Q4 of Q15
Intro to Computing - How Hardware Works
A program sends a command to the CPU to add two numbers. Which hardware component actually performs the addition?
AArithmetic Logic Unit (ALU)
BControl Unit
CRAM
DHard Drive
Step-by-Step Solution
Solution:

  1. Step 1: Identify CPU subcomponents

    The CPU has parts like the Control Unit and ALU; ALU handles math operations.

  2. Step 2: Determine which part adds numbers

    The Arithmetic Logic Unit performs addition and other calculations.

  3. Final Answer:

    Arithmetic Logic Unit (ALU) -> Option A

  4. Quick Check:

    Math operations = ALU [OK]
Quick Trick: ALU does math inside the CPU [OK]
Common Mistakes:
MISTAKES
  • Confusing Control Unit with ALU
  • Thinking RAM performs calculations
  • Assuming storage devices do math

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