What is VGA, SVGA and XGA?
VGA stands for Video Graphics Array. It supports 16 to 256 colors, depending
upon screen resolution. It supports 16 colors for a screen having resolution 320
x 200 pixels. Similarly, it supports 256 colors for a screen having resolution
640 x 480 pixels. It is called 4-bit color,
SVGA stands for Super Video Graphics Array. It has higher resolution than VGA.
It has two graphic modes such as 800 x 600 pixels and 1024 x 768 pixels. It
supports 256 (28 = 256) colors. It is called 8-bit color.
XGA stands for Extended Graphics Array. It supports up to 16.7 (i.e., 224)
million colors at a resolution of 1024 x 768 pixels. It is called 24-bit color.
The 24-bit color is also called true color.