Computer Science GCSE
Computer Science GCSE
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General Overview
The OCR GCSE Computer Science (J277) syllabus is designed to provide students with a strong foundation in computing principles and practices. The course covers both theoretical and practical aspects of computer science and is structured around key lessons that prepare students for the modern digital world.
Assessments
The GCSE Computer Science course is assessed through two written exams:
Paper 1: Computer Systems (50%) – Covers hardware, software, networks, cybersecurity, and the impact of technology on society. This paper will last for 1 hour 30minutes
Paper 2: Computational Thinking, Algorithms, and Programming (50%) – Focuses on problem-solving, algorithms, and coding skills. This paper will last for 1 hour 30minutes.
Examination Board : OCR and the specification number is J277. You can see the full specification here.
Examination Board : OCR and the specification number is J277. You can see the full specification here.
Revision Tips
Revision Tips
Use Active Revision Techniques
🔹 Make Flashcards – Key terms, programming concepts, and exam-style questions.
🔹 Mind Maps & Diagrams – For networks, CPU components, and cybersecurity.
🔹 Practice Past Papers – Answer OCR past exam questions under timed conditions.
Master Key Programming Concepts
Master Key Programming Concepts
🔹 Write & Test Code Regularly – Use Python to practice loops, functions, and data structures.
🔹 Trace Algorithms – Understand flowcharts, pseudocode, and dry-run code before execution.
🔹 Identify Common Mistakes – Debugging and fixing logical/syntax errors is key.
Key Topics for Paper 1
Key Topics for Paper 1
🔹 CPU & Fetch-Decode-Execute Cycle – Understand how instructions are processed.
🔹 Memory & Storage – Know RAM, ROM, secondary storage, and cloud computing.
🔹 Network Topologies & Protocols – Understand how data is transmitted and secured.
🔹 Cybersecurity – Learn about threats (phishing, malware) and protection methods (firewalls, encryption).
Key Topics for Paper 2
Key Topics for Paper 2
🔹 Algorithms – Sorting (bubble, merge) and searching (linear, binary).
🔹 Programming Constructs – Sequence, selection, iteration (loops).
🔹 Data Representation – Binary, hexadecimal, ASCII, and image representation.
🔹 Logic Gates & Boolean Algebra – AND, OR, NOT, truth tables
Useful Resources
Useful Resources
Google Classroom - for all the content and materials we have covered throughout the course
BBC Bitesize - resources geared to OCR
Chances | Choices | Culture
Chances | Choices | Culture
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