Monitor – Output Unit/Devices – Unit’s Of Computer

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Computer Monitor- Computer Fundamental- mLand India Technologies

A Monitor is an electronic visual computer display(Media) that includes a screen, circuitry and the case in which that circuitry is enclosed. On the other hand it is a display adapter that displays information processed by the computer’s video card. When a video card or graphics card converts binary information from 1s and 0s into images, these images are displayed onto the directly connected monitor.

The Three Main Types Of Monitors For Computers:

+  CRT – Cathode Ray Tube.

+  LCD – Liquid Crystal Display.

+  LED – Light Emitting Diodes.

+  Cathode Ray Tube (CRT) Monitor

What is a crt monitor

Cathode Ray Tube (CRT) is the technology used in traditional computer monitors and televisions. It contains millions of tiny red, green, and blue phosphor dots that glow when struck by an electron beam that travels across the screen to create a visible image. The image on a CRT display is created by firing electrons from the back of the tube to phosphors located towards the front of the display. The anode is positive, so it attracts the electrons pouring off the cathode.

What Is The Meaning Of CRT In Computer?

crt structure
In Cathode Ray Tube, a vacuum tube used as a display screen in a computer monitor or TV. The viewing end of the tube is coated with phosphors, which emit light when struck by electrons. In the past, CRT was a popular term for a computer display terminal.

What Is The Function Of CRT?

It convert an incoming electronic signal into a stream of electrons which is designed to create a picture by reacting with a substance on a screen.

+  Liquid Crystal Display(LCD)

what is a lcd

Liquid Crystal Display (LCD) is a flat panel display technology commonly used in TVs and computer monitors. It uses a liquid crystal to produce a visible image. Liquid Crystal Displays are super-thin technology display screen that are generally used in laptop computer screen, TVs, cell phones and portable video games. Instead of firing electrons at a glass screen, an LCD has back-light that provides light to individual pixels arranged in a rectangular grid. LCD’s technologies allow displays to be much thinner when compared to cathode ray tube (CRT) technology.

How Does A LCD Display Work?

Liquid Crystal Display technology works by blocking light. Specifically, an LCD is made of two pieces of polarized glass (also called substrate) that contain a liquid crystal material between them. A backlight creates light that passes through the first substrate.

+  Light Emitting Diodes(LED)

led monitor

An Light Emitting Diodes (LED) monitor is a flat screen, flat-panel computer monitor or television. While a standard LCD monitor uses fluorescent back-lights, an LED monitor uses light-emitting diodes for back-lights. LED monitors usually have superior picture quality, but they come in varying back-light configurations. And some back-light configurations create better images than others.

How Does A LED Display Work?

led display
How do LED monitors work?
An LED screen is actually an LCD screen, but instead of having a normal CCFL back-light, it uses light-emitting diodes (LEDs) as a source of light behind the screen. An LED is more energy efficient and a lot smaller than a CCFL, enabling a thinner television screen. There have been prototypes of real LED TVs.

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