Computing A-Level Introduction

This is a concise yet thorough look at the AQA A-Level Computing course curated by @Popey456963 and @PB.exe, two students themselves. We hope you find this guide useful.

Table of Contents

1. Numbers
   • Number systems
   • Number types
     • Natural numbers
     • Integer numbers
     • Rational numbers
     • Irrational numbers
   • Number bases
     • Counting in binary, decimal and hexadecimal
     • Place values
     • Units of binary
     • Multiples of bytes and bits
     • Bytes and hexadecimal
     • Numbers with a fractional part
     • Floating point form
     • Unsigned decimal representation
     • Research task
   • Information coding systems
   • Error checking and correction
   • Bitmap graphics
2. Pseudocode
   • Variables and CONSTANTS
     • Data types
     • Naming conventions
3. Programming
   • Programming basics
     • Sequence
     • Selection
     • Iteration
     • Procedure vs. function
   • Data structures
     • Abstract data structures
   • Basic programming operations
     • Arithmetical operations
     • Assignment operators
     • Relational operators
     • Boolean operators
     • Graphs
     • Paths and cycles
     • String operations
     • Type convesion