Last updated Aug 22, 2025
Edexcel GCSE Computer Science
Study Edexcel GCSE Computer Science with expert-written notes, quizzes, past papers, and exam-style questions. Everything is aligned to the GCSE Computer Science syllabus to help students understand key topics, stay on track with their study goals, and feel confident on exam day. Start studying smarter with SimpleStudy today.
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Explore Edexcel GCSE Computer Science by Topics
Decomposition and abstraction
Using subprograms
Algorithms
Variables and constants
Arrays
Records
Arithmetic and relational operators
Logical operators
Determining correct output
Using trace tables
Errors that can occur in programs
Linear search
Binary search
Bubble sort
Merge sort
Efficiency of algorithms
Using binary
Unsigned integers
Two's complement signed integers
Binary addition
Logical and arithmetic shifts
Overflow
Hexadecimal
Characters
Bitmap images
Analogue sound
Limitations of binary data representation
Binary units of measurement
Data compression
The stored program concept
The central processing unit (CPU)
The fetch-decode-execute cycle
The need for secondary storage
Types of secondary storage
Embedded systems
Operating system 1
Operating system 2
Utility software
Robust software
Programming languages
Interpreters and compilers
Networks
The internet
Packet switching
Wired versus wireless
Connectivity on a LAN
Network speeds
Network protocols
The TCP/IP model
Protecting networks
Environmental issues 1
Environmental issues 2
Personal data
Legislation
Artificial intelligence (AI)
Protecting intellectual property 1
Protecting intellectual property 2
Threats to digital systems
Protecting digital systems 1
Protecting digital systems 2
Read, analyse and refine programs
Convert algorithms 1
Convert algorithms 2
Convert algorithms 3
Convert algorithms 4
Convert algorithms 5
Program errors
Fitness for purpose and efficiency
Structural components of programs
Iteration
Repetition
Structured data types
Data types, variables and constants
String manipulation
Input and output
Read files
Write files
Validation
Pattern check
Authentication
Arithmetic operators
Relational operators
Subprograms
Functions
Procedures
Local and global variables
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