Color Graphics Adapter


  • Short for Color Graphics Adapter, CGA was an early IBM video adapter that replaced monochrome and was first introduced in 1981. CGA has the highest resolution of 640 x 200, color depth of 4-bit, and supports 16 colors (24 = 16). 1
  • The Color Graphics Adapter (CGA), originally also called the Color/Graphics Adapter or IBM Color/Graphics Monitor Adapter, introduced in 1981, was IBM’s first graphics card and first color display card for the IBM PC. For this reason, it also became that computer’s first color computer display standard. 2


  1. Computer Hope, CGA definition,
  2. Wikipedia, Color Graphics Adapter,
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