Memory, Storage Devices and Media (RAM, ROM, HDD, SSD, CD, DVD, Blu-ray etc.) | O/AS Level | By Zak

OL (1.3.5), AS(1.3.1, 1.3.2) The IAS is the general term for primary memory, from which the CPU can access instructions as part of the FDE. It includes RAM/ROM and registers. Basically, it is is where the CPU holds all the data and programs that it is currently using. OL: 1.3.5 Memory, storage devices and media • show understanding of the difference between: primary, secondary and off-line storage and provide examples of each, such as: primary: Read Only Memory (ROM), and Random Access Memory (RAM) secondary: hard disk drive (HDD) and Solid State Drive (SSD) off-line: Digital Versatile Disc (DVD), Compact Disc (CD), Blu-ray disc, USB flash memory and removable HDD • describe the principles of operation of a range of types of storage device and media including magnetic, optical and solid state • describe how these principles are applied to currently available storage solutions, such as SSDs,HDDs, USB flash memory, DVDs, CDs and Blu-ray discs AL: 1.3.1 Input, output and storage devices – hard disk solid state (flash) memory – optical discs 1.3.2 Main memory • show understanding of the need for primary storage –– explain the differences between RAM and ROM memory –– explain the differences between Static RAM (SRAM) and Dynamic RAM (DRAM) INTRODUCTION: Zafar Ali Khan "ZAK" is an A and O level Computer Science Pakistani educator, entrepreneur, and former programmer. He supports a free online education platform to impart O and A level resources. His resources include notes, video lectures, online discussion groups, and a full website that beats Cambridge International Examination (CIE) website in Google page ranking. ZAK is teaching a wide spectrum of learners for his subjects, mainly focusing on Computer Science 2210, 9608 and Computing 9691. ZAK has a strong presence on social media and has approx 50000 followers. Website: http://www.zakonweb.com Workshops: http://www.zakathon.com Phone App: https://bit.ly/ZakApp Online Discussions Group: OL http://www.zakonweb.com/ogroup AL http://www.zakonweb.com/agroup YouTube: http://www.zakonweb.com/videos Blog: http://www.zakonweb.com/blog Facebook: /olevelcomputer, /alevelcomputer Email: [email protected] WhatsApp/Call: +923 111 222 ZAK (925)