Traditional tutorials show you what code does. We show you how it actually works inside the computer.
Watch data flow through CPU components in real-time animations.
See the Fetch-Decode-Execute cycle in action.
See how variables are stored in RAM with real addresses.
Structured curriculum based on MIT's programming course.
Practice with coding challenges and earn XP.
Run code in your browser. No setup required.
Learning to code has never been more intuitive.
Use our Python editor with syntax highlighting.
See CPU, Memory, and Data Flow panels.
Watch the animation at your own pace.
Read explanations for each step.