{"id":121,"date":"2023-06-11T19:52:58","date_gmt":"2023-06-11T19:52:58","guid":{"rendered":"https:\/\/learnlearn.uk\/edexcel-igcse-computer-science\/?page_id=121"},"modified":"2023-06-11T19:52:58","modified_gmt":"2023-06-11T19:52:58","slug":"optical-storage-devices","status":"publish","type":"page","link":"https:\/\/learnlearn.uk\/edexcel-igcse-computer-science\/optical-storage-devices\/","title":{"rendered":"Optical Storage Devices"},"content":{"rendered":"<div class=\"responsive-tabs\">\n<h2 class=\"tabtitle\">Optical Storage<\/h2>\n<div class=\"tabcontent\">\n\n<h3>Optical Storage Devices<img decoding=\"async\" loading=\"lazy\" class=\"size-full wp-image-330 alignright\" src=\"https:\/\/learnlearn.uk\/gcsecs\/wp-content\/uploads\/sites\/8\/2016\/05\/cd-rom.jpg\" alt=\"\" width=\"225\" height=\"225\" \/><\/h3>\n<p><a href=\"http:\/\/learnlearn.uk\/gcsecs\/wp-content\/uploads\/sites\/8\/2016\/05\/Optical-Storage-Devices-Revision-Sheet.docx\">Optical-Storage-Devices-Revision-Sheet<\/a><\/p>\n<p>Optical Storages used to be incredibly popular up until the last couple of years where cloud storage and the rise of video and game streaming services have massively reduced their popularity.<\/p>\n<p>Types of optical storage devices:<\/p>\n<ul>\n<li>CD Drives\u00a0 (700MB)<\/li>\n<li>DVD Drives\u00a0 (4.7GB)<\/li>\n<li>BluRay Drives (50GB)<\/li>\n<\/ul>\n<p>Optical storage devices offer cheap and portable high capacity secondary storage. Far more portable than an internal hard-drive, which makes them good for small \/ medium size backups and great for sending through the post.<\/p>\n\n<\/div><h2 class=\"tabtitle\">How they work<\/h2>\n<div class=\"tabcontent\">\n\n<h3><strong>How they work<\/strong><\/h3>\n<p>Optical storage devices work by firing a laser at the surface of a spinning disk. The disc is covered in a pattern of pits in the CD surface. As the laser hits the pits it is reflected and the pattern of pits it detected by a laser detector.<\/p>\n<p><iframe loading=\"lazy\" src=\"\/\/scratch.mit.edu\/projects\/embed\/61133374\/?autostart=false\" width=\"800\" height=\"600\" frameborder=\"0\" allowfullscreen=\"allowfullscreen\" data-mce-fragment=\"1\"><br \/>\n<\/iframe><\/p>\n<\/div><\/div>\n","protected":false},"excerpt":{"rendered":"<p>Optical Storage Devices Optical-Storage-Devices-Revision-Sheet Optical Storages used to be incredibly popular up until the last couple of years where cloud storage and the rise of video and game streaming services have massively reduced their popularity. Types of optical storage devices: CD Drives\u00a0 (700MB) DVD Drives\u00a0 (4.7GB) BluRay Drives (50GB) Optical storage devices offer cheap and&hellip;&nbsp;<a href=\"https:\/\/learnlearn.uk\/edexcel-igcse-computer-science\/optical-storage-devices\/\" class=\"\" rel=\"bookmark\">Read More &raquo;<span class=\"screen-reader-text\">Optical Storage Devices<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"neve_meta_sidebar":"","neve_meta_container":"","neve_meta_enable_content_width":"off","neve_meta_content_width":100,"neve_meta_title_alignment":"","neve_meta_author_avatar":"","neve_post_elements_order":"","neve_meta_disable_header":"","neve_meta_disable_footer":"","neve_meta_disable_title":""},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v20.6 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Optical Storage Devices - Edexcel iGCSE Computer Science<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/learnlearn.uk\/edexcel-igcse-computer-science\/optical-storage-devices\/\" \/>\n<meta property=\"og:locale\" content=\"en_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Optical Storage Devices - Edexcel iGCSE Computer Science\" \/>\n<meta property=\"og:description\" content=\"Optical Storage Devices Optical-Storage-Devices-Revision-Sheet Optical Storages used to be incredibly popular up until the last couple of years where cloud storage and the rise of video and game streaming services have massively reduced their popularity. Types of optical storage devices: CD Drives\u00a0 (700MB) DVD Drives\u00a0 (4.7GB) BluRay Drives (50GB) Optical storage devices offer cheap and&hellip;&nbsp;Read More &raquo;Optical Storage Devices\" \/>\n<meta property=\"og:url\" content=\"https:\/\/learnlearn.uk\/edexcel-igcse-computer-science\/optical-storage-devices\/\" \/>\n<meta property=\"og:site_name\" content=\"Edexcel iGCSE Computer Science\" \/>\n<meta property=\"og:image\" content=\"http:\/\/learnlearn.uk\/gcsecs\/wp-content\/uploads\/sites\/8\/2016\/05\/cd-rom.jpg\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Estimated reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/learnlearn.uk\/edexcel-igcse-computer-science\/optical-storage-devices\/\",\"url\":\"https:\/\/learnlearn.uk\/edexcel-igcse-computer-science\/optical-storage-devices\/\",\"name\":\"Optical Storage Devices - Edexcel iGCSE Computer Science\",\"isPartOf\":{\"@id\":\"https:\/\/learnlearn.uk\/edexcel-igcse-computer-science\/#website\"},\"datePublished\":\"2023-06-11T19:52:58+00:00\",\"dateModified\":\"2023-06-11T19:52:58+00:00\",\"breadcrumb\":{\"@id\":\"https:\/\/learnlearn.uk\/edexcel-igcse-computer-science\/optical-storage-devices\/#breadcrumb\"},\"inLanguage\":\"en-GB\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/learnlearn.uk\/edexcel-igcse-computer-science\/optical-storage-devices\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/learnlearn.uk\/edexcel-igcse-computer-science\/optical-storage-devices\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/learnlearn.uk\/edexcel-igcse-computer-science\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Optical Storage Devices\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/learnlearn.uk\/edexcel-igcse-computer-science\/#website\",\"url\":\"https:\/\/learnlearn.uk\/edexcel-igcse-computer-science\/\",\"name\":\"Edexcel iGCSE Computer Science\",\"description\":\"\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/learnlearn.uk\/edexcel-igcse-computer-science\/?s={search_term_string}\"},\"query-input\":\"required name=search_term_string\"}],\"inLanguage\":\"en-GB\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Optical Storage Devices - Edexcel iGCSE Computer Science","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/learnlearn.uk\/edexcel-igcse-computer-science\/optical-storage-devices\/","og_locale":"en_GB","og_type":"article","og_title":"Optical Storage Devices - Edexcel iGCSE Computer Science","og_description":"Optical Storage Devices Optical-Storage-Devices-Revision-Sheet Optical Storages used to be incredibly popular up until the last couple of years where cloud storage and the rise of video and game streaming services have massively reduced their popularity. 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