This book provides a clear and concise revision text covering the full content of Unit R001 (Understanding Computer Systems) of the Cambridge Nationals in ICT Level 1/2 qualification from OCR (Oxford Cambridge and RSA).
The author is an experienced author of popular Information Technology textbooks for Key Stage 2 upwards. He is a former Principal Examiner for GCSE ICT and has worked as a Subject Leader for ICT and Local Authority Advisor.
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