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  1. IGCSE
  3. Computer Science Edexcel

Computer Science

Spec 4CP0

Free Edexcel IGCSE Computer Science revision: 452 exam-style questions and past papers from 2019–2025 with mark schemes.

Problem solving

Algorithms

Decomposition and abstraction

Programming

Develop code

Constructs

Data types and structures

Input/output

Operators

Subprograms

Data

Binary

Data representation

Data storage and compression

Encryption

Computers

Machines and computational modelling

Hardware

Logic

Software

Programming languages

Communication and the internet

Networks

Network security

The internet and the world wide web

The bigger picture

Emerging trends, issues and impact

Assessment at a glance

AssessmentFormatDurationMarksWeighting
Paper 1: Principles of Computer ScienceWritten exam2h80 marks50%
Paper 2: Application of Computational ThinkingPractical exam3h80 marks50%

Course aims & skills

Edexcel IGCSE Computer Science builds the skills examiners reward. By the end of the course you should be able to:

  • Design and trace algorithms using pseudocode and flowcharts
  • Write, test and debug programs in a high-level language
  • Convert between binary, denary and hexadecimal number systems
  • Explain how computer hardware and software components interact
  • Analyse how data is transmitted and secured across networks
  • Construct and interpret truth tables and logic statements
  • Evaluate the efficiency and suitability of different algorithms
  • Apply computational thinking to break down and solve unfamiliar problems
  • Consider the ethical, legal and environmental impact of computing

Frequently Asked Questions