Մասնակից:DASHTOYAN SERGEY
From Wikipedia, the free encyclopedia
A monitor or display (sometimes called a visual display unit) is an electronic visual display for computers. The monitor comprises the display device, circuitry, and an enclosure. The display device in modern monitors is typically a thin film transistor liquid crystal display (TFT-LCD) thin panel, while older monitors use a cathode ray tube about as deep as the screen size.
![Thumb image](http://upload.wikimedia.org/wikipedia/commons/thumb/7/7e/LG_L194WT-SF_LCD_monitor.jpg/640px-LG_L194WT-SF_LCD_monitor.jpg)
The first computer monitors used Cathode ray tubes (CRTs), which was the dominant technology until they were replaced by LCD monitors in the 21st Century.
Originally, computer monitors were used for data processing while television receivers were used for entertainment. From the 1980s onwards, computers (and their monitors) have been used for both data processing and entertainment, while televisions have implemented some computer functionality. The common aspect ratio of televisions, and then computer monitors, has also changed from 4:3 to 16:9.