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LCD monitor
Short for liquid crystal display, a
type of display used in digital watches and many portable computers. LCD displays utilize two sheets of polarizing material with a liquid crystal solution between them. An electric current
passed through the liquid causes the crystals to align so that light cannot pass through them. Each crystal, therefore, is
like a shutter, either allowing light to pass through or blocking the light.
Monochrome LCD images usually appear as blue or dark gray images on top of a grayish-white background. Color LCD displays use two basic techniques for producing color: Passive matrix is the less expensive of
the two technologies. The other technology, called thin film transistor (TFT) or active-matrix, produces color images that are as sharp as traditional CRT displays, but the technology is expensive. Recent passive-matrix displays using new CSTN and DSTN technologies produce sharp colors rivaling active-matrix displays.
screen
Screen may mean:
- Window screen, a wire mesh that covers a window opening
- Fire screen
- Windshield (windscreen), protects the driver of a vehicle
- Screen-printing (silk-screening), a method of printing
- Projection screen, a viewing surface
- Display device, a cathode ray tube or liquid crystal display (LCD)
- Computer display screen
- Television screen
- Electronic page, an interface, scene, page, or group of content on an electronic display device.
- Screen (journal), a journal of film and television studies
- GNU Screen, a computer program which multiplexes computer terminals
- Genetic screen, a procedure to identify a particular kind of phenotype
- Screen (sports), when a player obstructs the vision or motion of another player
- Screen pass, a play in American Football.
- Rood screen, a partition in a church which separates the chancel from the nave
- Sieve, a mesh used to separate fine particles from coarse ones.
- another name for "dynpro" in ABAP programs
CRT Monitor - 21" (20" Viewable), 1600x 1200 (Max Resolution), 0.25 mm Dot Pitch, Connects Via 15-Pin D-Sub,
PC and Mac Compatible
The cathode ray tube (CRT), invented by German physicist Karl Ferdinand Braun in 1897, is an evacuated glass envelope containing an electron gun (a source of electrons) and a fluorescent screen, usually with internal or external means to accelerate and deflect the electrons. When electrons strike the fluorescent
screen, light is emitted.
The electron beam is deflected and modulated in a way which causes it to display an image on the screen. The image may represent electrical waveforms (oscilloscope), pictures (television, computer monitor), echoes of aircraft detected by radar, etc.
The single electron beam can be processed in such a way as to display moving pictures in natural colors.
The generation of an image on a CRT by deflecting an electron beam requires the use of an evacuated glass envelope which
is large, deep, heavy, and relatively fragile (This has earned it the nickname "Fishbowl"). The development of imaging technologies
without these disadvantages has caused CRTs to be largely displaced by flat plasma screens, liquid crystal displays, DLP, OLED displays, and other technologies.
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