How Computers and the Internet Work

Free 6 lessons

By the end, you'll be able to explain what is inside a computer, how information travels across the internet, and what really happens when you open a website.

What's in this course

  1. 1 What is a computer, really?Input, processing, output and storage. Why a phone, a game console and a smart speaker are all computers.
  2. 2 Inside the boxThe processor, memory and storage, explained with a kitchen: the cook, the counter and the cupboard.
  3. 3 Everything is ones and zerosHow light switches can store words, pictures and music.
  4. 4 How the internet connects everyoneNetworks, cables under the ocean, Wi-Fi and mobile data.
  5. 5 What happens when you visit a websiteWeb addresses, servers and browsers, step by step.
  6. 6 Apps, software and who makes themWhat an app is, where it comes from, and why updates matter.