CGA - Computer Definition
(Color Graphics Adapter) The first color display interface for the IBM PC, which debuted in 1981. CGA was a digital display system that required an RGB Color Display monitor. It provided 16 colors in 80x25 or 40x25 text modes, but only four colors at 320x200 resolution and two colors at 640x200. CGA was superseded by EGA, and then VGA. See EGA and VGA.