{"id":944,"date":"2024-12-05T13:01:00","date_gmt":"2024-12-05T13:01:00","guid":{"rendered":"https:\/\/pennstudiostaging.co.uk\/craig-n-dave\/?post_type=product&#038;p=944"},"modified":"2025-02-28T19:47:16","modified_gmt":"2025-02-28T19:47:16","slug":"ocr-gcse-j277-slr-1-2-memory-and-storage-sample","status":"publish","type":"product","link":"https:\/\/pennstudiostaging.co.uk\/craig-n-dave\/product\/ocr-gcse-j277-slr-1-2-memory-and-storage-sample\/","title":{"rendered":"OCR GCSE (J277) SLR 1.2 \u2013 Memory and Storage &#8211; FREE SAMPLE UNIT"},"content":{"rendered":"<p>It includes:<\/p>\n<ul>\n<li>Student Learning Record Workbook (for use by students)<br \/>\nThe workbook answers have been removed from this download.<\/li>\n<li>End of Topic test<br \/>\nThe end of topic test answers have been removed from this download.<\/li>\n<li>Lesson PowerPoint\u2019s for every lesson<\/li>\n<\/ul>\n<p>This topic covers:<\/p>\n<p>1.2.1 Primary storage (Memory)<\/p>\n<ul>\n<li>The need for primary storage<\/li>\n<li>The difference between RAM and ROM<\/li>\n<li>The purpose of ROM in a computer system<\/li>\n<li>The purpose of RAM in a computer system<\/li>\n<li>Virtual memory<\/li>\n<\/ul>\n<p>1.2.2 Secondary storage<\/p>\n<ul>\n<li>The need for secondary storage<\/li>\n<li>Common types of storage<\/li>\n<li>Optical<\/li>\n<li>Magnetic<\/li>\n<li>Solid state<\/li>\n<li>Suitable storage devices and storage media for a given application<\/li>\n<li>The advantages and disadvantages of different storage devices and storage media relating to these characteristics:<\/li>\n<li>Capacity<\/li>\n<li>Speed<\/li>\n<li>Portability<\/li>\n<li>Durability<\/li>\n<li>Reliability<\/li>\n<li>Cost<\/li>\n<\/ul>\n<p>1.2.3 Units<\/p>\n<ul>\n<li>The units of data storage:<\/li>\n<li>Bit<\/li>\n<li>Nibble (4 bits)<\/li>\n<li>Byte (8 bits)<\/li>\n<li>Kilobyte (1,000 bytes or 1 KB)<\/li>\n<li>Megabyte (1,000 KB)<\/li>\n<li>Gigabyte (1,000 MB)<\/li>\n<li>Terabyte (1,000 GB)<\/li>\n<li>Petabyte (1,000 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