Question

explain LCD monitor and LED monitor and CRT monitor

Answer 1

LCD

a) LCD stands for Liquid Crystal

Display which is a thin, flat display

screen made up of any number of

color or monochrome pixels

arrayed in front of a light source

or reflector.

b) It is often used in electronic

Devices because it uses very small amounts of electric power.

LED

a) LED stands for Light

Emitting Diode which is a semiconductordiode that

emits incoherent narrow-

spectrum light when

electrically biased in the

forward direction of the p-n junction. This effect is a

form of electroluminescence.

b) It can be used as a

regular household light

source.

CRT

a) CRT stands for Cathode

Ray Tube which is a tube

coated with phosphorous in

inner surface. When electrons

produced by e-gun come in

contact with phosphorous

wall, light is produced by

virtue of which we can see.

b) It is generally used

in TV scrreens, monitors, etc

Answer 2

LED stand for Light Emitting Diode. It is the most modern type of monitor.

LDC stands for Liquid Crystal Display. It is relatively older than LED.

CRT stands for Cathode Ray Tube. It is the oldest type of Monitors.

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