CRT Monitor

OUTPUT DEVICE

1)      Monitor

2)      Printer

3)      Speaker

1)      Monitor: monitor is a common output device that prints data in the form of softcopy. It may be following types.

i)                    CRT display

ii)                  LCD display

iii)                Plasma display

iv)                LED DISPLAY

                CRT: IT stands for cathode ray display tube. It is common output device used to display data and information in from of soft copy output. It consists of electron gin from which electrons are emitted and glow when strikes on phosphor coated screen. This phosphor coated screen is used to display. This phosphor coated screen is used to display information. To produce color effect three types of phosphor are used. They are:

a)      Red

b)      Green

c)       Blue

The stream of electrons is guiding by magnetic charges, which is why you may get interference with unshielded speakers or other magnetic devices that are placed close to a CRT monitor. Flat screen or lcd displays don't have this problem, since they don't require a magnetic charge. LCD monitors also don't use a tube, which is what enables them to be much thinner than CRT monitors. While CRT displays are still used by graphics professionals because of their vibrant and accurate color, LCD displays now nearly match the quality of CRT monitors. Therefore, flat screen displays are well on their way to replacing CRT monitors in both the consumer and professional markets.