Memory, Storage & Data Units Explained | OCR GCSE Computer Science (J277)

Welcome back to our OCR GCSE Computer Science (J277) revision series! Today, we are looking at Paper 1: Memory and Storage. To help visualise these concepts, we are using an interactive Storage Laboratory to see exactly how your computer stores data. We will cover: - Primary Storage: The crucial differences between RAM (Volatile) and ROM (Non-Volatile). - Virtual Memory: What happens when your RAM gets completely full, and how data spills over into secondary storage. - Secondary Storage Race: Comparing the speed and 6 key characteristics (Capacity, Speed, Portability, Durability, Reliability, Cost) of Solid State (SSD), Magnetic (HDD), and Optical (DVD) storage. -Unit Converter: How to convert from Bits and Nibbles all the way up to Terabytes (and the base-10 rule for J277!). -Exam Practice: We jump back into the examiner's shoes to mark a student's answer on Virtual Memory.