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  1. AS Level
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Computer Science Lessons

Spec H046

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Step-by-step OCR AS Level Computer Science lessons by topic, building up to exam-style questions.

Computer systems (Component 01)

The characteristics of contemporary processors, input, output and storage devices

Software and software development

Exchanging data

Data types, data structures and algorithms

Legal, moral, cultural and ethical issues

Algorithms and programming (Component 02)

Elements of computational thinking

Problem solving and programming

Algorithms

Programming project - non-exam assessment (Component 03 or 04)

Analysis of the problem (10 marks)

Design of the solution (15 marks)

Developing the solution (25 marks)

Evaluation (20 marks)

Reference appendices

Mathematical skills

Languages and Boolean logic guide for use in external assessments

Entity relationship diagrams