Unit 1 · 4 lessons
Introduction to Computers
What a computer actually is, how it got this fast, and the two number systems everything inside it is written in.
- 39 practice questions
- 33 flashcards
- 1 interactive lesson
Lessons
- 1The Computer System ModelEvery computing device — phone, laptop, thermostat, car — is the same four-stage system: input, process, output, storage.10 questions
- 2Binary, Decimal and HexadecimalWhy computers count in twos, why programmers write in sixteens, and how to convert between all three without a calculator.Interactive11 questions
- 3Representing Data: Bits, Bytes and FilesHow text, colours, sound and file sizes are all built out of the same bits — and why a 500 GB drive shows up as 465 GB.10 questions
- 4Generations, Moore's Law and Where Hardware Is GoingHow computers went from room-sized to pocket-sized, and what is driving — and now limiting — that progress.8 questions