Skip to content
DoingCamp CS

Make it comfy

Lesson style

Quick mode shows the key picture, a summary and the practice. Good for a refresher.

Theme
Font

Both fonts are designed to be easy to read. Some readers with dyslexia prefer Lexend.

Text size
Spacing
Animations

Lesson 10 of 14 · about 14 min

The CPU: fetch, decode, execute

A program is a list of simple instructions stored in memory as numbers. The CPU repeats one cycle forever. Fetch the next instruction, work out what it means, do it.

🔓 Unlock this lesson

This lesson is part of the DoingCamp Pass. Members get every lesson in every course, with all the interactive visuals, coding exercises and challenges.

In this lesson you'll learn:

  • CPU
  • Fetch–decode–execute
  • Stored program

Free to try in F01 What Is a Computer?:

The first 3 lessons of every course are free, no account needed.