This fantastic CGP Revision Guide covers everything students will need for the Grade 9-1 OCR GCSE Computer Science exams (fully updated for the specification changes starting in September 2020 and beyond), from Software Systems to Pseudocode! Each topic is clearly explained in plain English, with plenty of helpful examples and tips - and we've included all the details needed for the top grades. For even more Computer Science exam preparation, a matching CGP Exam Practice Workbook is also available (9781789085570).