CodeArc — O Level, IGCSE & A Level Revision with an AI Teacher

Cambridge O Level, IGCSE, AS and A Level Maths, Physics, Chemistry, Biology and Computer Science: syllabus lessons, AI teacher explanations and marked practice papers.

Please enable JavaScript to use CodeArc.

The Three Core Parts · Theory

Ch 2 · Inside the CPU — card 1 of 2.

The CPU (Central Processing Unit) is where instructions actually run. Three components do the work: