{"id":110385,"date":"2021-02-25T11:27:12","date_gmt":"2021-02-25T05:57:12","guid":{"rendered":"https:\/\/www.vskills.in\/certification\/tutorial\/?page_id=110385"},"modified":"2024-04-12T14:31:01","modified_gmt":"2024-04-12T09:01:01","slug":"analog-video-2","status":"publish","type":"page","link":"https:\/\/www.vskills.in\/certification\/tutorial\/analog-video-2\/","title":{"rendered":"Analog Video"},"content":{"rendered":"\n<p>There had been different types of analog video and each differs on resolution and the maximum number of colors in its palette. Their evolution and types are discussed.<\/p>\n\n\n\n<p><strong>Monochrome<\/strong> \u2013 It is first video technology and was black-and-white video but, was sufficient for DOS operating system as DOS didn\u2019t have any need for color. Images used only shades of grey called grayscale.<\/p>\n\n\n\n<p><strong>EGA and CGA<\/strong> \u2013 It was developed by IBM and was the first display device with color. Color Graphics Adapter (CGA) could display text, but it displayed graphics with a resolution of only 320 \u00d7 200 pixels with four colors and with resolution (640 \u00d7 200) using two colors\u2014black and one other color. Enhanced Graphics Adapter (EGA) could display 16 colors out of a palette of 64 with a resolution of 320 \u00d7 200 or 640 \u00d7 350 pixels. Both were standard for color for long time.<\/p>\n\n\n\n<p><strong>VGA<\/strong> &#8211; Video Graphics Array (VGA) video technology had a 256KB of video memory on board and could display 16 colors at 640 \u00d7 480 pixels or 256 colors at 320 \u00d7 200 pixels. It became very popular. It\u2019s an analog technology.<\/p>\n\n\n\n<p><strong>SuperVGA &#8211;<\/strong> The Video Electronics Standards Association (VESA) came out with a enhanced technology as a &nbsp;public standard called SuperVGA (SVGA) which could support 16 colors at a resolution of 800 \u00d7 600 (the VESA standard), but it expanded to support 1,024 \u00d7 768 pixels with 256 colors.<\/p>\n\n\n\n<p><strong>XGA<\/strong> &#8211; Extended Graphics Array (XGA) was introduced by IBM. &nbsp;It could support 256 colors at 1,024 \u00d7 768 pixels or 65,536 colors at 800 \u00d7 600 pixels. It was optimized for GUIs like Windows.<\/p>\n\n\n\n<p><strong>Other Analog Video<\/strong> &#8211; Other technologies are extensions of SVGA or XGA so, if it starts with letter W, it will have wider horizontal resolution to accommodate 16:9 or 16:10 wide-screen formats and if preceded with Q means horizontal and vertical resolutions were each doubled. So, if XGA with resolution of 1024 \u00d7 768, then QXGA resolution is 2048 \u00d7 1536and if SuperXGA (SXGA) has resolution of 1280 \u00d7 1024 then WSXGA have 1440 \u00d7 900.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Apply for IT Support Certification<\/strong><\/h2>\n\n\n\n<p><a href=\"https:\/\/www.vskills.in\/certification\/certified-it-support-professional\">https:\/\/www.vskills.in\/certification\/certified-it-support-professional<\/a><\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><strong><a href=\"https:\/\/www.vskills.in\/certification\/tutorial\/certified-it-support-professional\/\" target=\"_blank\" rel=\"noreferrer noopener\">Back to Tutorials<\/a><\/strong><\/h4>\n","protected":false},"excerpt":{"rendered":"<p>There had been different types of analog video and each differs on resolution and the maximum number of colors in its palette. Their evolution and types are discussed. Monochrome \u2013 It is first video technology and was black-and-white video but, was sufficient for DOS operating system as DOS didn\u2019t have any need for color. Images&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"categories":[127],"tags":[],"class_list":["post-110385","page","type-page","status-publish","hentry","category-it-support-professional"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Analog Video - Tutorial<\/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:\/\/www.vskills.in\/certification\/tutorial\/analog-video-2\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Analog Video - Tutorial\" \/>\n<meta property=\"og:description\" content=\"There had been different types of analog video and each differs on resolution and the maximum number of colors in its palette. Their evolution and types are discussed. Monochrome \u2013 It is first video technology and was black-and-white video but, was sufficient for DOS operating system as DOS didn\u2019t have any need for color. 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