OCR 9-1 Computer Science is made up of two exams:

J277/01: Computer systems 

Written paper: 1 hour and 30 minutes 50% of total GCSE 80 marks

Topics include: 

• 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 

Written paper: 1 hour and 30 minutes 50% of total GCSE 80 marks

Topics include: 

• 2.1 Algorithms

• 2.2 Programming fundamentals

• 2.3 Producing robust programs

• 2.4 Boolean logic

• 2.5 Programming languages and Integrated Development Environments