OCR GCSE Computer Science Paper 1 Revision Pack — Computer Systems (J277)

Save hours of revision planning with this complete, ready-to-use OCR GCSE Computer Science Paper 1 revision pack.

This pack covers all six topic areas assessed in OCR GCSE Computer Science Paper 1 (J277 — Computer Systems), providing structured revision notes, exam-style practice questions, and a full mark scheme. Ideal for use in lessons, revision sessions, or as a self-study resource for students.

**What's included:**

- **Revision Notes** — Comprehensive topic-by-topic notes covering the entire Paper 1 specification, including key definitions, worked examples, and exam tips

- **Practice Questions** — 10 exam-style questions with mark allocations, spanning all six topic areas

- **Answer Scheme** — Full model answers with detailed mark-by-mark breakdowns for every question

**Topics covered:**

- **Architecture of the CPU** — Von Neumann architecture, ALU, Control Unit, cache, registers (PC, MAR, MDR, Accumulator), clock speed, number of cores, embedded systems

- **Memory and Storage** — RAM vs ROM, virtual memory, magnetic storage (HDD), solid state storage (SSD, USB), optical storage (CD, DVD), data units (KB, MB, GB, TB)

- **Computer Networks** — LAN vs WAN, client-server vs peer-to-peer, DNS, cloud computing, star and mesh topologies, TCP/IP, HTTP/HTTPS, FTP, SMTP

- **Network Security** — Malware, phishing, brute-force attacks, denial of service, SQL injection, firewalls, encryption, penetration testing, physical security

- **Systems Software** — Operating system functions, memory management, multitasking, defragmentation, data compression

- **Ethical, Legal, Cultural and Environmental Impacts** — Data Protection Act 2018, Computer Misuse Act 1990, Copyright Act 1988, open source vs proprietary software, e-waste, digital divide

**Suitable for:** OCR GCSE Computer Science specification J277.

**Delivered as:** A single ZIP file containing all three documents. Download instantly and use in your classroom tomorrow.