IGCSE Computer Science (0478) — real past-paper questions, marked by AI
IGCSE Computer Science (0478) runs on two written papers, and the questions reward precision: trace a pseudocode algorithm by hand, complete a trace table, draw a logic circuit, or find the error in a broken program. Write, state, explain — the command words are short, but the mark scheme wants exact logic, not a general sense of the right idea.
This hub holds 786 real 0478 questions from 30 papers set between 2023 and 2025. Logic gates and logic circuits leads the topic table with 14 questions, tied with validation and verification, ahead of input and output devices, databases, pseudocode error-finding and trace tables. Type your answer, whether it is a trace table, a logic expression or a pseudocode fix, and the AI examiner marks it instantly against the real Cambridge mark scheme, checking your logic step by step rather than just scanning for keywords.
Sweep the topics you find hardest to trace by hand, then sit a full timed paper. It is free, with no signup required.
New: How IGCSE Computer Science (0478) is really marked — command words, examiner-report findings and revision strategy.
Past papers by year
2025
| Paper | Session | Questions |
|---|---|---|
| Paper 11 | May–June 2025 | 9 |
| Paper 12 | May–June 2025 | 5 |
| Paper 13 | May–June 2025 | 7 |
| Paper 21 | May–June 2025 | 11 |
| Paper 22 | May–June 2025 | 10 |
| Paper 23 | May–June 2025 | 8 |
2024
| Paper | Session | Questions |
|---|---|---|
| Paper 11 | May–June 2024 | 9 |
| Paper 12 | May–June 2024 | 11 |
| Paper 13 | May–June 2024 | 9 |
| Paper 21 | May–June 2024 | 10 |
| Paper 22 | May–June 2024 | 11 |
| Paper 23 | May–June 2024 | 9 |
| Paper 11 | October–November 2024 | 9 |
| Paper 12 | October–November 2024 | 8 |
| Paper 13 | October–November 2024 | 7 |
| Paper 21 | October–November 2024 | 11 |
| Paper 22 | October–November 2024 | 12 |
| Paper 23 | October–November 2024 | 12 |
2023
| Paper | Session | Questions |
|---|---|---|
| Paper 11 | May–June 2023 | 10 |
| Paper 12 | May–June 2023 | 10 |
| Paper 13 | May–June 2023 | 11 |
| Paper 21 | May–June 2023 | 11 |
| Paper 22 | May–June 2023 | 11 |
| Paper 23 | May–June 2023 | 11 |
| Paper 11 | October–November 2023 | 9 |
| Paper 12 | October–November 2023 | 13 |
| Paper 13 | October–November 2023 | 10 |
| Paper 21 | October–November 2023 | 10 |
| Paper 22 | October–November 2023 | 11 |
| Paper 23 | October–November 2023 | 10 |
Practise IGCSE Computer Science by topic
- Hardware (108 questions)
- Algorithm design and problem-solving (43 questions)
- Data representation (26 questions)
- The internet and its uses (23 questions)
- Data transmission (21 questions)
- Boolean logic (19 questions)
- Databases (16 questions)
- Automated and emerging technologies (13 questions)
- Software (12 questions)
- Programming (11 questions)
Frequently asked questions
Which 0478 papers and years are covered?
Every May–June and October–November session from 2023 to 2025 — 30 papers across Paper 1 and Paper 2 and their variants.
How does the AI marking work for trace tables and pseudocode?
You type out your trace table values or corrected pseudocode, and an AI examiner checks each step against the official Cambridge mark scheme, confirming exactly where your logic matched or missed the scheme.
What topics come up most in 0478?
Logic gates and circuits and validation and verification lead the topic count, with input and output devices, databases, pseudocode error-finding and trace tables also heavily examined — the hub tags every question by topic so you can target these directly.
How should I revise Computer Science theory with past papers?
Drill logic gates, trace tables and pseudocode questions by topic first, since they reward exact method, then move to full timed papers to build pace.
Is it really free?
Yes — every question, mark scheme and AI marking run is free, with no signup and no card details.
Are these official Cambridge papers?
Questions are transcribed from real Cambridge papers and marked against the real mark schemes, which remain © Cambridge International. Cambridge Papers is an independent study tool, not affiliated with or endorsed by Cambridge.