How computers think — and how to make them do what you want.
Computer Science is about understanding how technology works under the hood. From writing your own programs to understanding how the internet works, how data is stored, and how to keep systems secure — it's the subject that explains the technology you use every single day.
The first computer bug was an actual bug — a moth stuck in a Harvard relay in 1947.
There are about 700 programming languages. Python is named after Monty Python, not the snake.
A single Google search uses more computing power than the entire Apollo 11 moon mission.
The first 1GB hard drive (1980) weighed 250kg and cost £30,000. Now you carry 256GB in your pocket.
41 topics across 8 units — all mapped to the AQA GCSE specification.
Computational thinking, searching, sorting, pseudocode, flowcharts and trace tables.
Variables, data types, operators, selection, iteration, arrays, functions, file handling and SQL.
Binary, hexadecimal, ASCII, Unicode, images, sound, compression and encryption.
Architecture, CPU, memory, storage, operating systems, software types and logic gates.
Network types, topologies, protocols, TCP/IP, the internet, WiFi and cloud computing.
Threats, social engineering, malware, prevention methods, firewalls and encryption.
Relational databases, tables, primary/foreign keys, SQL queries and data management.
Privacy, legislation, environmental impact, digital divide and open source vs proprietary.
Doesn't just give you the answer — walks you through it step by step so you can do it yourself in the exam.
Stuck on a homework problem? Confused by a concept? Ask in your own words — no such thing as a stupid question.
See exactly which topics you've nailed and which need more work. XP, streaks and mastery scores for every topic.
Practice with questions modelled on real GCSE papers. Marks, hints and model answers included.
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