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The Processor & Its Registers

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About this resource

Explain the role of the ALU, control unit, clock and general-purpose registers, and state the specific role of each dedicated register (PC, CIR, MAR, MBR, status register) — 4.7.3.1.

22 slides.

Lesson outline

  1. Retrieval: Components, Buses & the Stored Program Concept
  2. Key Vocabulary
  3. Why Does a Processor Need Registers?
  4. Inside the Processor — Registers
  5. Quick Check: What Is a Register?
  6. The Big Picture: Inside the Processor
  7. Hinge Question: Who Does the Calculating?
  8. The Arithmetic Logic Unit (ALU)
  9. Task: Role of the ALU
  10. The Control Unit (CU) & the Clock
  11. Quick Check: The Clock's Role
  12. General-Purpose vs Dedicated Registers
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