![]() High-resolution CRT displays were developed for specialized military, industrial and scientific applications but they were far too costly for general use wider commercial use became possible after the release of a slow, but affordable Tektronix 4010 terminal in 1972. The display was monochromatic and far less sharp and detailed than on a modern monitor, necessitating the use of relatively large text and severely limiting the amount of information that could be displayed at one time. Prior to the advent of home computers in the late 1970s, it was common for a video display terminal (VDT) using a CRT to be physically integrated with a keyboard and other components of the workstation in a single large chassis, typically limiting them to emulation of a paper teletypewriter, thus the early epithet of 'glass TTY'. The first computer monitors used cathode-ray tubes (CRTs). This term mostly fell out of use by the 1990s. One of the first uses of a standalone computer monitor with a personal computer was with the Apple 1, which connected directly to a consumer television as a monitor instead of using a glass terminal as its output.Ĭomputer monitors were formerly known as visual display units ( VDU), particularly in British English. Instead, a line printer was the primary output device, while the monitor was limited to keeping track of the program's operation. As early monitors were only capable of displaying a very limited amount of information and were very transient, they were rarely considered for program output. This allowed the engineers operating the computer to monitor the internal state of the machine, so this panel of lights came to be known as the 'monitor'. History Įarly electronic computer front panels were fitted with an array of light bulbs where the state of each particular bulb would indicate the on/off state of a particular register bit inside the computer. ![]() As most computer monitors do not include integrated speakers, TV tuners, or remote controls, external components such as a DTA box may be needed to use a computer monitor as a TV set. Modern computer monitors are often functionally interchangeable with television sets and vice versa. In the 2000s, the typical display aspect ratio of both televisions and computer monitors changed from 4:3 to 16:9. From the 1980s onward, computers (and their monitors) have been used for both data processing and video, while televisions have implemented some computer functionality. Originally, computer monitors were used for data processing while television sets were used for video. Monitors sometimes use other proprietary connectors and signals to connect to a computer, which is less common. A monitor is typically connected to its host computer via DisplayPort, HDMI, USB-C, DVI, or VGA. Before the mid- 2000s, most monitors used a cathode-ray tube (CRT) as the image output technology. The display in modern monitors is typically an LCD with LED backlight, having by the 2010s replaced CCFL backlit LCDs. A discrete monitor comprises a visual display, support electronics, power supply, housing, electrical connectors, and external user controls. ![]() A flat-panel display (FPD) computer monitor A cathode-ray tube (CRT) computer monitorĪ computer monitor is an output device that displays information in pictorial or textual form. ![]() Not to be confused with Computer terminal or Monitor (synchronization).
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