Welcome

This course contains detailed notes on the topics covered in the GCSE OCR Computer Science J277 specification.

Please note that this content has not been updated for some time. It is incomplete and existing content may be innacurate. An overhaul is planned.

Course Contents

Paper 1

1.1 - Systems Architechture

1.1.1

Architechture of the CPU

1.1.2

CPU Performance

1.1.3

Embedded Systems

1.2 Memory and Storage

1.2.1

Primary Storage (Memory)

1.2.2

Secondary Storage

1.2.3

Units

1.2.4

Data Storage

1.2.5

Compression

1.3 - Computer Networks, Connections and Protocols

1.3.1

Networks and Topologies

1.3.2

Wired and Wireless Networks, Protocols and Layers

1.4 - Network Security

1.4.1

Threats to Computer Systems and Networks

1.4.2

Identifying and Preventing Vulnerabilities

1.5 Systems Software

1.5.1

Operating Systems

1.5.2

Utility Software

1.6 Ethical, Legal, Cultural and Environmental Impacts of Digital Technology

1.6.1

Ethical, Legal, Cultural and Environmental Impact

Paper 2

2.1 Algorithms

2.1.1

Computational Thinking

2.1.2

Designing, Creating and Refining Algorithms

2.1.3

Searching and Sorting Algorithms

2.2 Programming Fundamentals

2.2.1

Programming Fundamentals

2.2.2

Data Types

2.2.3

Additional Programming Techniques

2.3 Producing Robust Programs

2.3.1

Defensive Design

2.3.2

Testing

2.4 Boolean Logic

2.4.1

Boolean Logic

2.5 Programming Languages and Integrated Development Environments

2.5.1

Languages

2.5.2

The Integrated Development Environment (IDE)

About the Author

Hi! I'm Oliver, a Computer Science student in the UK. I created CourseNotes as a way to share my learning and knowledge with the world, and help other students to do their best in their exams.

I am currently studying Computer Science at GCSE level with the OCR exam board. All notes on this site will be exam board specific, but a lot of the concepts are similar across other exam boards.

GCSE Computer Science

OCR J277