One page per syllabus section, in Cambridge's own order. Each teaches the content, diagrams it, then tests it with self-marked exam questions.
Data representation
Everything a computer stores, from a photo to a program, has to be turned into binary first. This topic covers the denary, binary and hexadecimal number systems and the c...
8 questions · 22 marks
Revise this topicData transmission
Data does not travel across a network in one piece. It is broken into packets, sent by one of several transmission methods, checked for errors at the other end and encryp...
8 questions · 24 marks
Revise this topicHardware
This topic is about the physical parts of a computer and what each one is for. It covers the CPU and its components, the fetch-decode-execute cycle, what cores, cache and...
8 questions · 24 marks
Revise this topicSoftware
Software is everything the computer runs, as opposed to everything it is made of, and the exam splits it two ways: system software against application software, and the l...
8 questions · 26 marks
Revise this topicThe internet and its uses
This topic covers how the internet and the world wide web differ, what a URL is made of, how HTTP and HTTPS move a page from a server to your screen, what a browser does ...
8 questions · 26 marks
Revise this topicAutomated and emerging technologies
This topic covers systems that run themselves: how a sensor, a microprocessor and an actuator work together in an automated system, and what such a system gains and costs...
8 questions · 27 marks
Revise this topic