MDA

MDA, acronym for Monochrome Display Adapter. In computer science, a video adapter introduced in 1981, capable of only one character mode: 25 lines of 80 characters each, with underlining, blinking, and high-intensity characters. Although IBM never used the name Monochrome Display Adapter or the acronym MDA. MDA is often used to refer to the IBM Monochrome Display and Printer Adapter. See also Monitor.