Free IGCSE Computer Science notes for Cambridge 0478 cover programming concepts, algorithms, data representation, hardware, networking, and databases — but coding practice matters as much as reading summaries. Use this finder with our complete CS revision notes and the 0478 guide. See the free IGCSE notes hub for general tools.

Topics free notes should cover

Strand	Note + practice needs
Programming	Pseudocode, flowcharts, trace tables
Algorithms	Searching, sorting, efficiency ideas
Data representation	Binary, hex, images, sound
Hardware & software	CPU, memory, OS, utilities
Networks & security	Protocols, threats, prevention
Databases	Keys, SQL-style queries (per syllabus)

Free sources

• ZNotes Computer Science — topic summaries.
• School programming tasks — often best for pseudocode style your examiner expects.
• Tutopiya portal — CS topic resources where available.
• ICT 0417? — If you sit ICT not CS, use IGCSE ICT 0417 — different syllabus.

How to revise CS with notes

1. Read a topic (e.g. binary arithmetic).
2. Do 3 exam-style questions without notes.
3. Write or trace code/pseudocode daily — even 15 minutes.
4. Past papers — especially algorithm tracing and logic gates.

Passive reading of free notes without tracing under-prepared students for Paper 1 and 2 problem-solving.

Frequently asked questions

Are free CS notes enough?

You must code and trace algorithms; notes alone are insufficient.

ZNotes for 0478?

Useful for theory recap; add past papers and IDE practice.

CS vs ICT notes?

Different syllabuses — confirm your entry code before downloading notes.

Full programming revision guide?

Complete CS revision notes.

Free IGCSE notes for all subjects?

Free IGCSE notes hub.

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