IG&AS&AL Computer Science Notes

⭐About

This page collects the Computer Science notes I have made. Computer Science in IGCSE and A-Level is a notorious subject be blamed for its huge amount of knowledge to be memorized. I hope this notes could help learners gain happiness on their path of studying Computer Science, and definitely achieve high scores.

Note Format:

1. past-paper questions are underlined
2. Mark-scheme answers are coloured blue
3. Emphasized words are bold

📑Directory

• A-Level
• AS-Level
• IGCSE

A Level

• Chapter 13.1: User-defined Data Types
• Chapter 13.2: File organisation and access
• Chapter 13.3: Floating-point numbers: representation and manipulation
• Chapter 14: Communication and Internet technologies
• Chapter 15.1: Processors, Parallel Processing and Virtual Machines
• Chapter15.2: Boolean Algebra And Logic Circuits
• Chapter 16.1: Purpose of an operating system
• Chapter 16.2: Translation Software
• Chapter 17: Security
• Chapter 18: Artificial Intelligence
• Chapter 19.1: Algorithms
• Chapter 19.2: Recursion
• Chapter 20.1: Programming Paradigms
• Chapter 20.2: File processing and Exception Handling
• Paper4: Practical Notes

AS-Level

• Chapter 1: Information Representation
• Chapter 2: Communication
• Chapter 3: Hardware
• Chapter 4: Processor Fundamentals
• Chapter 5: System Software
• Chapter 6: Security, Privacy, and Data Integrity
• Chapter 7: Ethics And Ownership
• Chapter 8: Database

To be released soon🐼

💡Resources

CIE 官方文件

• AS_Syllabus-注释版
• 9618 Pseudocode Guide

✋How to contribute

1. You can comment under each post using disqus or gittalk about anything you want to add/change/fix

   • disqus requires a vpn to run
   • gittalk requires a github account

2. You can leave me a message via email ⬇

   • leave a message

👬Contributors

Katrina Liu

Economist

Ryan

Mathematician

Alisa Wu

Computer Scientist