Taking Color out of the Color Graphics Adapter

When IBM released the Personal Computer back in 1981, it gave the buyer two choices for the video output. The buyer could buy a monochrome card and a special high resolution green screen monitor to go with it, or a color card and connect it to a color monitor. The buyer could even run both cards in the same system. If someone was on a tight budget, they could use a monochrome monitor with a color…