VGA (Video Graphics Array) is an analog interface between a device and monitor that was widely used prior to DVI, HDMI and DisplayPort. VGA was introduced on the IBM PS/2 in 1987, replacing the previous digital CGA (Color Graphic s Adapter) and EGA (Enhanced Video Adapter) interfaces, which had lower resolution and fewer colors. New LCD monitors may include a VGA port for legacy devices, and device’s may have a VGA port for legacy monitors.
The cables have 15-pin connectors: 5 pins at the top, 5 in the middle, and the other 5 at the very bottom. The picture is an example of a cable showing all 15 pins.
The port on a desktop or laptop naturally has the same number of pinholes so that a VGA cable can plug directly into it.
Each and every pin has its own function. For example, the first pin is for transferring the color red, while the second and third are for green and blue, respectively.
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