FDE Cycle

Fetch-Decode-Execute Cycle

Links with information about the FDE cycle, from simple & concise to deeper and more detailed:

• GCSE Bytesize (Instructions)
• The Fetch–Execute cycle and the role of registers within it (A level Computing WikiBook)
• Also known as the Instruction cycle (Wikipedia article)

An excellent flow chart depicting the FDE cycle (original source https://en.wikipedia.org/wiki/Instruction_cycle):

Plus a nice animation demonstrating how the fetch-decode-execute cycle works, made using Scratch:

• https://scratch.mit.edu/projects/2145440/

I have also made my own, simplified version for study and revision purposes: