Back to Bright Minds
Bright Minds Tutoring HubExamReady Zambia
Join now
ExamReady

Cambridge IGCSE · Revision notes

Computer Science revision notes

Topic by topic notes, worked examples and practice questions for every topic in the Cambridge IGCSE and O Level Computer Science syllabus.

Subscribers only

Checking your access…

Choose a topic

Data representation

  1. 1.Binary and hexadecimalNumber systems, Binary arithmetic, Logical shifts, Two’s complement
  2. 2.Text images and soundCharacter sets, Bitmap images, Sound sampling, Storage and compression

Data transmission

  1. 1.Transmitting dataTransmission modes, Packets, Error detection, Encryption

Hardware

  1. 1.Processors memory and devicesCPU architecture, Fetch-decode-execute, Memory and storage, Input output and networks

Software

  1. 1.Software and operating systemsSystem and application software, Operating system tasks, Interrupts, Languages and translators

The internet and its uses

  1. 1.Internet and cyber securityInternet and web, Web retrieval, Digital currency, Threats and protection

Automated and emerging technologies

  1. 1.Automation robotics and AIAutomated systems, Robotics, Artificial intelligence, Expert systems and learning

Algorithm design and problem-solving

  1. 1.Designing and testing algorithmsDecomposition and abstraction, Flowcharts and pseudocode, Searching and sorting, Testing and validation

Programming

  1. 1.Programming fundamentalsData types and operators, Selection and iteration, Input output and strings, Totals and counters
  2. 2.Arrays procedures and filesOne-dimensional and two-dimensional arrays, Procedures and functions, Scope and parameters, Text files and maintainability

Databases

  1. 1.Relational data and SQLTables fields and records, Keys and relationships, Data types, SQL queries and aggregates

Boolean logic

  1. 1.Logic gates and expressionsGate behaviour, Truth tables, Logic circuits, Combined conditions

These are Bright Minds revision notes and practice questions in Cambridge style, not official Cambridge International materials. Always check the syllabus year with your school.