Written by senior examiners and experienced teachers, OCR Computing for GCSE Student's Book provides unparalleled support for the fully accredited course. The text . - Unit A451 - Computer Systems and Programming - examined; - Unit A452 - Practical Investigation - controlled assessment. - Unit A453 - Programming Project - controlled assessment. Featuring case studies, coverage of exam skills and providing advice on tackling the practical elements of the course, the book is fully supported with digital resources available on line via our Dynamic Learning service