The OCR Computer Science GCSE (J277 Specification) consists of 2 units of work as follows:
J277/01 - Computer Systems
1.1 – Systems architecture
1.2 – Memory and storage
1.3 – Computer networks, connections and protocols
1.4 – Network security
1.5 – Systems software
1.6 – Ethical, legal, cultural and environmental impacts of digital technology
J277/02 - Computational thinking, algorithms and programming
2.1 – Algorithms
2.2 – Programming fundamentals
2.3 – Producing robust programs
2.4 – Boolean logic
2.5 – Programming languages and Integrated Development Environments