IB Computer Science SL Notes

Aimnova offers free IB Computer Science SL revision notes for the 2027 syllabus, first assessed in May 2027. Every micro-topic includes clear explanations, worked examples, spaced-repetition flashcards, and IB-style practice questions with AI feedback — no sign-up required to read the notes.

IB Computer Science SL is built from two themes. Theme A covers the concepts of computer science: computer fundamentals (CPU components, memory, the fetch-decode-execute cycle, storage and compression), networks, databases, and machine learning. Theme B covers computational thinking and problem-solving: specifying a problem, programming with the standard control structures and data structures, algorithm efficiency, file processing, and object-oriented programming.

These notes are organised across seven study units following the guide’s own A1–A4 and B1–B3 structure, so you can revise systematically for Paper 1 (short answers and structured questions, 35%), Paper 2 (applied programming and problem-solving, 35%), and the internally assessed computational solution (30%). Every topic ends with a summary page built for revision and a bank of exam-style questions.