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Green screen was the common name for a monochrome CRT computer display using a green phosphor based coating. They succeeded teletype terminals and preceded colour CRTs as the predominant visual output device for computers. They were abundant in the early-to-mid- 1980s, together with amber screen s.

The most famous green screen product is arguably the original IBM PC monochrome display, designated the IBM 5151 (the PC itself had the model number 5150). From the outset, the 5151 was designed to work with the PC's Monochrome Display Adapter (MDA) text-only graphics card, but soon the third-party Hercules Graphics Card became a popular companion to the 5151 screen because of the 'Herc's high-resolution bitmapped monochrome graphics capability, much used for business presentation graphics generated from e.g. spreadsheets like Lotus 1-2-3.

Some green screen displays were furnished with a particularly full/intense phosphor coating, making the characters very clear and sharply defined (thus easy to read), but generating a somewhat disturbing afterglow-effect (sometimes called a "ghost image") when the text scrollScroll can have different meanings: A scroll is a roll of parchment, papyrus, or paper which has been drawn or written upon. Compare codex. Scrolling is a term that describes the continuous movement of text/graphics over a screen or display window.ed down the screen or when a screenful of information was quickly replaced with another as in word processingWord processing in its now-usual meaning, is the use of a word processor to create documents using computers. Word processing can also refer to advanced shorthand techniques, sometimes used in conjunction with specialised keyboards. In this sense of the t page up/down operations. The 5150 belonged to this category. Other green screens avoided the heavy afterglow-effects, but at the cost of much more pixelA pixel (a contraction of picture element is one of the many tiny dots that make up the representation of a picture in a computer's memory. Usually the dots are so small and so numerous that, when printed on paper or displayed on a computer monitor, theyated character images.

The ghosting effects of now-obsolete green screens have become an eye-catching visual shorthand for computer-generated text, frequently (and ironically) in "futuristic" settings.. The Ghost in the ShellGhost in the Shell (1995) Ghost in the Shell (Japanese TV title: Kokaku Kidotai STAND ALONE COMPLEX & S. 2nd GIG, Japanese movie title: GHOST IN THE SHELL/) ( 1991 / English version 1995) is a Japanese science fiction manga created by Masamune Shirow. and Matrix seriesThe ''Matrix series spans major motion pictures, Japanese animation, and video games in an attempt to tell a story that's part science fiction, part modern myth, with elements of cyberpunk, computer science, philosophy of mind, Hinduism, Christianity, Gno science-fiction films prominently feature computer displays with ghosting green text. The XScreenSaverXScreenSaver is a screensaver program for Unix-like operating systems running the X Window System. It is maintained by Jamie Zawinski. The open source Unix-like systems use it almost universally. One reason for XScreenSaver's tremendous popularity is the package of screen savers by Jamie ZawinskiZawinski (born c. 1970 in Pittsburgh, Pennsylvania), commonly known as jwz is a computer programmer, responsible for significant contributions to the free software projects Mozilla and XEmacs, as well as early versions of the commercial Netscape Navigator also includes a screen saver called Phosphor that prints green text with a simulated ghosting effect.