Cambridge 9618 — Computer Science
Revision vault for Cambridge International AS & A Level Computer Science 9618, built against the 2026 syllabus.
Everything here is reconstructed from three sources: the syllabus itself, every past question and mark scheme in the 9618 and 9608 series, and the Save My Exams revision notes. Nothing is written from memory.
New here? Start with the architecture
Every topic has two notes — a Jigsaw and a Pack — and they are meant to be used in a particular order. → How the Jigsaw–Pack system works
Notes
📘 Paper 1 — Theory Fundamentals
75 marks · 1h 30m · Topics 1–8. Complete.
📙 Paper 2 — Fundamental Problem-solving and Programming
75 marks · 2h · Topics 9–12. Not yet built.
Resources
🗂 Legend archive and source material
The 9618 and 9608 question banks, sorted by syllabus bullet, plus the syllabus PDF.
Where the vault stands
| Topic | Jigsaw | Pack | Concepts | Q&A pairs |
|---|---|---|---|---|
| 1 · Information Representation | ✅ | ✅ | 168 | 142 |
| 2 · Communications | ✅ | ✅ | 199 | 157 |
| 3 · Hardware | ✅ | ✅ | 94 | 87 |
| 4 · Processor Fundamentals | ✅ | ✅ | 122 | 114 |
| 5 · System Software | ✅ | ✅ | 109 | 107 |
| 6 · Security, Privacy and Data Integrity | ✅ | ✅ | 105 | 110 |
| 7 · Ethics and Ownership | ✅ | ✅ | 83 | 82 |
| 8 · Databases | ✅ | ✅ | 155 | 148 |
Totals — 1035 mapped concepts and 947 question/answer pairs across all eight Paper 1 topics.
Paper 1 is complete
All eight topics now have both a Jigsaw and a Pack. The remaining work in this vault is Paper 2 (topics 9–12), which has not been started.
If you are deciding what to revise first
Topic 1, bullet 1.1.3 (converting between bases) carries 51 separate 9618 questions — more than any other single bullet in the paper. Topic 8 (Databases) is almost always a whole multi-part question worth 6–15 marks. Those two are the highest-yield places to start.