Binary Calculations Explained | A-Level & GCSE Computer Science

Need an exam-focused guide on binary calculations for A-Level & GCSE Computer Science? This video is designed to help you understand how to perform essential binary operations for your exams. In this video, as an experienced A-Level computer science teacher, I’ll cover: Representing real numbers Representing decimal numbers - fixed and floating point Representing positive and negative numbers Addition Subtraction - 2 different methods Multiplication Division - 2 different methods Hexadecimal This exam-focused guide is perfect for last-minute revision and understanding the core binary concepts you’ll need for your exam. Chapters: 00:00 Introduction 00:35 Basic Binary 06:19 Addition 10:54 Sign and Magnitude 13:14 Two’s Complement 17:14 Subtraction using two’s complement 19:58 Subtraction using borrow method 23:48 Decimal numbers - Fixed Point 25:30 Decimal numbers - Floating point 33:22 Normalisation 38:04 Bitwise Manipulation - Multiplication and Division 41:24 Division - Long Division 44:31 - Hexadecimal 👉 If you found this helpful, check out my full A-Level and GCSE Computer Science Knowledge Sprints revision playlist: https://youtube.com/playlist?list=PL5tqcCZz1-Z62za3E9WB7tTNlRYCjj-cc&si=sezjeueMjE3rMhQx This playlist includes quick, focused tutorials on many Compter Science topics to help you prepare for your exams! Resources for A-Level and GCSE Students: More A-Level Computer Science Videos: http://www.youtube.com/@robincomputerscience With my classroom-tested approach using Robin Computer Science, you’ll gain a solid understanding of the different types of processors and feel more prepared for your A-Level exams. I’m here to answer your questions—drop a comment below if you’d like more help with this topic or other A-Level concepts!