#Define monochrome Pc#

Well-known examples of early monochrome monitors are the VT100 from Digital Equipment Corporation, released in 1978, the Apple Monitor III in 1980, and the IBM 5151, which accompanied the IBM PC model 5150 upon its 1981 release. Īn amber screen was claimed to give improved ergonomics, specifically by reducing eye strain this claim appears to have little scientific basis. If the P4 phosphor is used, the screen is white monochrome (known as 'page white') this is the same phosphor as used in early television sets. If the P3 phosphor is used, the screen is amber monochrome.

Monochrome monitors are commonly available in three colors: if the P1 phosphor is used, the screen is green monochrome. Either normal/bright or normal/dim (1 bit) per character as in the VT100 or black, dark gray, light gray, white (2bit) per pixel like the NeXT MegaPixel Display. Typically, only a limited set of brightness levels was provided to save display memory which was very expensive in the '70s and '80s. 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. All text and graphics are displayed in that color. Unlike color monitors, which display text and graphics in multiple colors through the use of alternating-intensity red, green, and blue phosphors, monochrome monitors have only one color of phosphor ( mono means 'one', and chrome means 'color'). The most common technology for monochrome monitors was the CRT, although, e.g., plasma displays, were also used. It uses a GoldStar Type 310KGLA amber tube.

Define monochrome