Book excerpt: The revision series for Pearson Edexcel GCSE (9-1)from Pearson. This book will help you to: Organise your revision with the one-topic-per-page format Prepare for your GCSE exams with exam-style practice questions on every topic Simplify your revision by writing straight into the book, just as you would in an exam Track your progress with at-a-glance check boxes Improve your exam technique with practice exam papers Build confidence with hints and tips Focus your revision with target grades for every question. Also available: Pearson Revise Revision Guide (ISBN 9781292374000) Revise every topic in this book with the accompanyingPearson Edexcel GCSE (9-1) Computer Science Revision Guide. It gives you clear,concise explanations of every topic, worked examples showing you how to answerexam-style questions and a 1-to-1 page match with this Revision Workbook.