The full form of VGA is Video Graphics Array. In 1987, IBM initially standardised VGA. The IBM PS/2 computer series saw its first application of it. It has a refresh rate of 60 Hz and a resolution of 640×480 pixels. It displays up to 256 colours at once from the 262,144 colour range. It includes a 6-Bit Digital Analogue converter to translate analogue RCB (red, green, and blue) signals.
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The first graphics card to provide up to 16 colours at a screen resolution of 640 x 480 pixels was the original VGA graphics card. Lowercase letters might be displayed thanks to VGA’s ability to display up to 256 colours at a reduced resolution of 320 x 200 pixels. It was incorporated into the first OS loading mechanism as a result. As an illustration, Microsoft’s Windows OS has loaded its recognisable starting screen in VGA colour.
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Aspects of VGA
- For VGA, there is only one standard and no variations. The device can properly connect to the VGA-in if it has a VGA-out.
- Since VGA signals are analogue, they may be used with more accuracy than digital ones.
- Small letter rendering was significantly facilitated by VGA, and transparency was enhanced.
- In comparison to its predecessors, including the Enhanced Graphic Adapter, VGA produced a high resolution of 320–200 pixels.
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- It is outdated technology with only a little level of resolution.
- In comparison to some of its predecessors, VGA’s colour support is less robust.
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