VGA Meaning and
Definition
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VGA, an acronym for Video Graphics Array, refers to a widely used analog video display standard that was introduced by IBM in 1987. It is primarily used to connect computer monitors and screens to display the output of computers or other compatible devices.
VGA is characterized by its maximum resolution of 640x480 pixels, displaying up to 16 colors simultaneously from a palette of 256 colors. It uses analog signals to transmit video information and standard D-subminiature 15-pin VGA connectors for physical attachment. The VGA standard supports refresh rates ranging from 60 to 70 Hz, providing flicker-free imagery.
This display standard was groundbreaking at the time since it provided a significant improvement over its predecessor, CGA (Color Graphics Adapter), in terms of resolution, color depth, and overall image quality. VGA quickly became the de facto standard for computer graphics, replacing older standards like CGA and EGA (Enhanced Graphics Adapter).
VGA has remained popular even as newer and higher-resolution standards have emerged due to its compatibility with a wide range of devices, including older computers, projectors, and legacy equipment. While it is slowly being phased out in favor of digital interfaces such as DVI (Digital Visual Interface) and HDMI (High-Definition Multimedia Interface), VGA is still widely used in various industries, making it an essential technology to understand when dealing with graphics and display interfaces.
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