{"id":7,"date":"2019-08-29T07:37:22","date_gmt":"2019-08-29T07:37:22","guid":{"rendered":"http:\/\/learnlearn.uk\/alevelcs\/?page_id=7"},"modified":"2021-03-26T06:26:00","modified_gmt":"2021-03-26T06:26:00","slug":"binary-decimal-prefixes","status":"publish","type":"page","link":"https:\/\/learnlearn.uk\/alevelcs\/binary-decimal-prefixes\/","title":{"rendered":"Binary and Decimal Prefixes"},"content":{"rendered":"<div class=\"responsive-tabs\">\n<h2 class=\"tabtitle\">Video<\/h2>\n<div class=\"tabcontent\">\n\n<div class=\"nv-iframe-embed\">\n<div class=\"container-lazyload preview-lazyload container-youtube js-lazyload--not-loaded\"><a href=\"https:\/\/www.youtube.com\/watch?v=AKJ-FVWqIbw\" class=\"lazy-load-youtube preview-lazyload preview-youtube\" data-video-title=\"Binary Tutorial #3: Decimal and Binary prefixes for describing quantities of bytes: Computing Tutor\" title=\"Play video &quot;Binary Tutorial #3: Decimal and Binary prefixes for describing quantities of bytes: Computing Tutor&quot;\">https:\/\/www.youtube.com\/watch?v=AKJ-FVWqIbw<\/a><noscript>Video can&#8217;t be loaded because JavaScript is disabled: <a href=\"https:\/\/www.youtube.com\/watch?v=AKJ-FVWqIbw\" title=\"Binary Tutorial #3: Decimal and Binary prefixes for describing quantities of bytes: Computing Tutor\">Binary Tutorial #3: Decimal and Binary prefixes for describing quantities of bytes: Computing Tutor (https:\/\/www.youtube.com\/watch?v=AKJ-FVWqIbw)<\/a><\/noscript><\/div>\n<\/div>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n\n<\/div><h2 class=\"tabtitle\">Decimal Prefixes<\/h2>\n<div class=\"tabcontent\">\n\n<h3>Decimal Prefixes &#8211; <span style=\"color: #ff0000;\">Kilo \/ Mega \/ Giga\u00a0 \/ Tera<\/span><\/h3>\n<p>The most common prefix system used is the Decimal Prefix system. This is the system we use every day: Kilogram, Megabyte, Kilometer<\/p>\n<p>The decimal prefix system works by each prefix being 1000 times larger than the previous prefix:<\/p>\n<ul>\n<li>1 KiloByte = 1000Bytes\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 (10^3)<\/li>\n<li>1 MegaByte = 1000 KiloBytes = 1,000,000 Bytes\u00a0 \u00a0( 10^6)<\/li>\n<li>1 GigaByte = 1000 MegaBytes = 1,000,000,000\u00a0Bytes\u00a0 ( 10^9)<\/li>\n<li>1 TeraByte = 1000 GigaBytes = 1,000,000,000,000\u00a0Bytes\u00a0 ( 10^12)<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n\n<\/div><h2 class=\"tabtitle\">Binary Prefixes<\/h2>\n<div class=\"tabcontent\">\n\n<h3>Binary Prefixes &#8211; <span style=\"color: #ff0000;\">Kibi \/ Mebi\u00a0 \/ Gibi \/ Tebi<\/span><\/h3>\n<p>This works well where we humans count in denary (Powers of 10) but computers count in binary (Powers of 2) and therefore we need to use a binary prefix instead &#8211; Kibi, Mebi, Gibi, Tebi<\/p>\n<ul>\n<li>1 KiB = 1024 Bytes\u00a0 \u00a0( 2 ^10)<\/li>\n<li>1 MiB = 1024 KiB ( 2^20)<\/li>\n<li>1 GiB = 1024 MiB ( 2^30)<\/li>\n<li>1 TiB = 1024 GiB ( 2^40)<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n\n<\/div><h2 class=\"tabtitle\">Confusion<\/h2>\n<div class=\"tabcontent\">\n\n<h3>Consumer Confusion Nightmare.<\/h3>\n<p>Consumers are used to using kilo, mega, giga, etc. This meant that when personal computers became popular manufacturers of software and hardware began to use the system inconsistently (KB could mean either 1000 or 1024 bytes). There was an attempt to fixing this through the implementation of the IEC standard, however Microsoft being Microsoft refused to adopt international standards, stating (just like they did with IE until everyone stopped using it). Apple&#8217;s iOS and some versions of Linux follow the international standard.<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n\n<\/div><h2 class=\"tabtitle\">resources<\/h2>\n<div class=\"tabcontent\">\n\n<p>Teacher Resources<\/p>\n<p><a href=\"https:\/\/docs.google.com\/presentation\/d\/1HqjffTCbUuJerc7jyzWFXtN6m6OeT8aZ2HSAW_1pGcU\/edit?usp=sharing\">Binary and Decimal Prefixes Presentation<\/a><\/p>\n<p><a href=\"https:\/\/docs.google.com\/document\/d\/12m4MOJfmvPq-ygLAALTAU0ibhva49JHGe_OsnXl2FqI\/edit?usp=sharing\">Binary and Decimal Prefixes Worksheet<\/a><\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<\/div><\/div>\n","protected":false},"excerpt":{"rendered":"<p>https:\/\/www.youtube.com\/watch?v=AKJ-FVWqIbwVideo can&#8217;t be loaded because JavaScript is disabled: Binary Tutorial #3: Decimal and Binary prefixes for describing quantities of bytes: Computing Tutor (https:\/\/www.youtube.com\/watch?v=AKJ-FVWqIbw) &nbsp; &nbsp; Decimal Prefixes &#8211; Kilo \/ Mega \/ Giga\u00a0 \/ Tera The most common prefix system used is the Decimal Prefix system. This is the system we use every day: Kilogram,&hellip;&nbsp;<a href=\"https:\/\/learnlearn.uk\/alevelcs\/binary-decimal-prefixes\/\" class=\"\" rel=\"bookmark\">Read More &raquo;<span class=\"screen-reader-text\">Binary and Decimal Prefixes<\/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":"","neve_meta_content_width":70,"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>Binary and Decimal Prefixes - A Level 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\/alevelcs\/binary-decimal-prefixes\/\" \/>\n<meta property=\"og:locale\" content=\"en_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Binary and Decimal Prefixes - A Level Computer Science\" \/>\n<meta property=\"og:description\" content=\"https:\/\/www.youtube.com\/watch?v=AKJ-FVWqIbwVideo can&#8217;t be loaded because JavaScript is disabled: Binary Tutorial #3: Decimal and Binary prefixes for describing quantities of bytes: Computing Tutor (https:\/\/www.youtube.com\/watch?v=AKJ-FVWqIbw) &nbsp; &nbsp; Decimal Prefixes &#8211; Kilo \/ Mega \/ Giga\u00a0 \/ Tera The most common prefix system used is the Decimal Prefix system. 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