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CGA is the first color monitor standard for the IBM PC.

The video card released by IBM in 1981 is the first IBM video card to support color display.


A standard CGA graphics card has 16 kilobytes of video memory and can be connected to either an NTSC-compatible monitor or TV, or an RGBI monitor. Based on the Motorola MC6845 video controller, the CGA graphics card supports several graphics and text video modes. The maximum supported resolution is 640*200, the maximum color depth is 4 bits (16 colors).