OCR Computer Science A-Level
Component 1: Computer Systems

These pages are based on content from the OCR Computer Science 2015 specification.

This website is in no way affiliated with OCR.

1. Hardware

1.1a - The CPU & FDE Cycle

1.1b - Performance

1.2 - Processors

1.3a - Input & Output Devices

1.3b - Memory & Storage

2. Software

2.1 - Operating Systems

2.2a - Applications & Utilities

2.2b - Translators & Compilation

2.3 - Software Development Methodologies

2.4a - Programming & Pseudocode

2.4b - Assembly Language

2.4c - Object-Oriented Language

3. Networks & Databases

3.1a - Compression

3.1b - Encryption & Hashing

3.2a - Databases & Normalisation

3.2b - SQL

3.3a - Network Characteristics

3.3b- Protocols & TCP-IP Stack

3.3c - Network Hardware & DNS

3.3d - Network Security & Threats

3.4a - Web Technologies

3.4b - HTML, CSS & JavaScript

4. Data & Logic

4.1a - Data Types & Character Sets 

4.1b - Denary, Binary & Hexadecimal

4.1c - Signed Binary & Floating Point

4.1d - Binary Calculations

4.1e - Shifts & Masks

4.2 - Data Structures

4.3a - Logical Operators & Truth Tables

4.3b - Flip Flops, Adders, Laws & Maps

5. Laws

5.1 - Computer Legislation

5.2 - Moral & Ethical Issues