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1. Fetch-Decode-Execute Cycle
A simple explanation of how the CPU
processes instructions

2. Three Steps of the Cycle
• 1. **Fetch** – Get the next instruction from
memory.
• 2. **Decode** – Understand what to do.
• 3. **Execute** – Carry out the instruction.
• This repeats for every instruction.

3. How It Works
• [PC] → [MAR] → [MDR] → [CIR] → Decode →
Execute → Repeat!

4. Summary
• Fetch → Decode → Execute → Repeat!
• This is how the CPU runs programs.