The ClearRevise OCR GCSE Computer Science J277 Revision Guide by PG Online is a comprehensive resource for students looking to excel in their computer science studies. This book, published in 2020, covers the subject area in depth and is authored by PG Online, a trusted name in the industry. With a focus on computer science and written in English, this revision guide caters to beginners, intermediates, and advanced learners alike. Whether you are reviewing for your GCSE exams or looking to deepen your knowledge in the subject, this guide is a valuable tool for any student aiming to succeed in their academic pursuits.