A complete set of revision sheets for J277 OCR Computer Science. Includes all of the topics for the first unit J277/01: Computer systems.

1,1 Systems architecture
1,2 Memory and storage
1,3 Computer networks, connections and
protocols
1.4 Network security
1.5 Systems software
1.6 Ethical, legal, cultural and environmental impacts of digital technology

With over 150 practice questions to test your students!!!

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