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(WorldofCables.com, Santa Clara- CA) With all the talk about new video technologies, it’s easy to forget that computers have been well-served by the same graphics technology for over 20 years. In this article, we’ll talk about the VGA graphics standard and its later variations. See for more
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Before we begin, it’s important to understand two terms: resolution and color depth. The resolution of a computer monitor is defined as the number of pixels (dots) used to create the image; the higher the resolution, the more detailed the picture. Resolutions are typically expressed as (number of pixels wide) X (number of pixels high); for example, a “typical” resolution these days for a computer monitor might be “1024 x 768.” (In the digital camera world, resolution is expressed as “mega pixels”, where a 6-megapixel camera would take pictures at a resolution of 3000 x 2000).Color depth is a term used to describe how many different shades of color are possible to display on each pixel. The more distinct shades of color you can choose from, the more realistic the image appears. Modern computer monitors typically can display any one of 16.7 million different shades of color! With those two definitions behind us, we can start to understand the various standards and technologies that comprise the VGA family of displays.
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