Monochrome monitor

Abundant in the early-to-mid-1980s, they succeeded Teletype terminals and preceded color CRTs and later LCDs as the predominant visual output device for computers.

Some monitors have the ability to vary the brightness of individual pixels, thereby creating the illusion of depth and color, exactly like a black-and-white television.

Typically, only a limited set of brightness levels was provided to save display memory which was very expensive in the '70s and '80s.

[2] Amber screens were considered more ergonomic as they reduced eye strain, following the same principle as modern blue light filters (visual comfort filters), which limit the most energetic wavelengths (blue) that cause eye fatigue and give screens a more amber tint.

Although they may improve comfort during prolonged use, there is no definitive evidence that these filters protect against long-term retinal damage.

Monochrome monitors were used in almost all dumb terminals and were widely used in text-based applications such as computerized cash registers and point of sale systems because of their superior sharpness and enhanced readability.

The colour scheme, grid layout of characters, and ghosting effects of the now-obsolete monochrome CRT screens have become an eye-catching visual shorthand for computer-generated text, frequently in "futuristic" settings.