VGA full form is Video Graphics Adapter or Video Graphics Array. It is the name of a well-known display standard that was developed by IBM and released in 1987.
VGA utilizes analog signals, which means it’s only capable of lower resolutions and a lesser quality display on screens.
VGA enables color display displays with a resolution of 640 by 480 pixels, a refresh rate of 60 hertz, and the ability to display 16 colors simultaneously. If the resolution is reduced all the way down to 320 by 200, 256 colors will be displayed.