Monitors
To state the obvious, the monitor is a piece of equipment that allows you to visually work with your PC. The monitor, sometimes called a visual display unit (VDU) has developed a great deal in recent years. In years gone by, the monitor was easily the biggest and heaviest part of the PC set up. This was because it worked on principles developed for the earliest televisions, the main component being the cathode ray tube. These monitors are referred to as CRT monitors and were very heavy and bulky, occupying a large “footprint” on the desk. The footprint refers to the area the monitor takes up on the desk.
These CRT monitors were perfectly adequate and provided a very good quality of image. Until recently CRT monitors provided a better quality of image than the competing technology and were used extensively in industries that required top quality display, such as in the design and video industries.
Modern monitors use a different technology called thin film transistor liquid crystal display and is referred to as TFT-LCD, or shortened further to TFT or LCD. Early LCD screens, though being much slimmer and lighter than CRT monitors, were more expensive and provided a poorer quality of image. As the technology has improved the cost has dropped and the quality has improved. Today, flat screen, LCD monitors are distributed with new PCs as a matter of course and have replaced the CRT monitor in almost every environment – at work and at home.
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