I doubt this can be exactly determined. Some early computers using CRT DRAM for memory had an extra tube that could be switched to any bank to display memory contents as dots for 1's, this might be considers a monochrome monitor though it was of limited use. Many early computers that needed a display used RADAR tubes. On microcomputers in the 1970s an ordinary TV was used. There were probably many inventors, of many different forms.
A monochrome monitor that is not a flat-screen monitor is one kind of cathode ray tube.
I will explain how a monochrome (black-and-white) display works. A color display has the same basic mechanism, but with each pixel replaced by a triple of independent elements that produce varying amounts of red, green, and blue.
Use a monochrome monitor.
Monochrome
Monochrome
A monitor that displays only one color (and black or lack of color as the contrasting color for the background) is known as a monochrome monitor.
One because it only has one gun........ (:
A screen/monitor that only shows one color except for black. Like a black and white TV or a green and black cell-phone screen.
Sohm and chrome rhymes with monochrome.
1949
Monitor
thalia gray invented computer monitor in 2002