Written by experts, this book has been written to match Units 1, 2 and 3 of the OCR GCE Computing specification (units F451, F452 and F453) and is endorsed by OCR. The content has been written and and laid out in an easy-to-understand manner, making use of a variety of methods to convey key learning requirements to students. The book is split into four sections; - the theory units, matching the breakdown on the specification; - the examined tasks, which provide advice about how to approach the tasks and prepare for the exam; and - examination technique. Students will find this book invaluable in guiding them through both the theoretical and practical elements of the course. Electronic versions of the units covered by this book and additional coverage of the A2 Unit 454 Computing Project is provided via a Dynamic Learning network edition CD-ROM (see separate entry). This provides students and teachers with access to additional resources such as tutorials, activity sheets and files that can form the basis of programming tasks, as well as a fully interactive edition of the book. The full Network Edition also provides teachers with the basis of a scheme of work and content that can be delivered to students with ease. It features teacher notes and additional resources, a Lesson Builder and full network licence.