13.1.4. Stage 4: Instruction Execution

Try these first

1. 1.

   What role does the Program Counter play in instruction execution?

   Hint

   Think about where the CPU looks next.

2. 2.

   What does the Instruction Register contain?

   Hint

   It's the command being processed by the CPU.

3. 3.

   What is the first phase of instruction execution?

   • Decode Phase
   • Fetch Phase
   • Execute Phase

   Hint

   Think about where it all begins in CPU operations.

4. 4.

   True or False: The Instruction Register contains the next instruction to execute.

   • True
   • False

   Hint

   Remember what happens after fetching.

5. 5.

   Design a flowchart that outlines the steps for executing an instruction like LOAD R1, M, including control signal statuses.

   Hint

   Remember to include all phases: Fetch, Decode, Execute, and Store.

6. 6.

   Explain how the CPU distinguishes between different types of instructions (like LOAD vs. ADD) during the decode phase.

   Hint

   Look at how the structure of an instruction helps in identification.