. Part of computer hardware which displays videos, text and images.
. Made of circuitry, a screen, power supply and buttons to operate settings.
. Earlier monitors were created using Cathode Ray Tubes and Fluorescent screens.
. Today's monitors are created using flat panel display technology like LCDs LED's.
. Made of circuitry, a screen, power supply and buttons to operate settings.
. Earlier monitors were created using Cathode Ray Tubes and Fluorescent screens.
. Today's monitors are created using flat panel display technology like LCDs LED's.
Types of Monitors:
CRT:
. Used cathode ray tube to create an image on screen.
. From beam of electrons, it hits fluorescent screen which produces images.
. It consists of guns which emits electrons.
. It is heavier and used consumes much power.
LCD:
. Liquid Crystal Displays are commonly used today.
. Uses compact fluorescent tubes to illuminate and brightens image.
. Active part is layer of liquid hold between two pieces of polarized glass.
. Light from behind liquid shines through glass and illuminate crystals.
. Produces good quality image.
. Least expensive monitors in market.
LED:
. Light Emitting Diode are also used commonly today.
. Expensive compared to LCD's.
. Thinner setup by replacing fluorescent tubes with backlighting LED's.
. Improve picture quality and more energy efficient.
Touch Screen:
. Screens are lighter, more efficient with touch.
. Costlier compared to all types of monitors.
. It provides ease to access without using keyboard and mouse.
. It acts as both input and output device.
How it is connected to PC?
. Using different wire systems it is connected to CPU.
. In most cases, we use VGA cables.
. There are three types of cables to connect monitors to CPU:
- VGA
- DVI
- HDMI
. Differences between all these types are:
Property | VGA | DVI | HDMI |
---|---|---|---|
Acronym | Video Graphics Array | Digital Visual Interface | High Definition Multimedia Interface |
Released | 1987 | 1999 | 2002 |
Purpose | Connect monitors and TVs. Contains only video | Connect computer monitors, TVs, video game consoles, DVD players | Connect display monitors, Video projectors, digital televisions |
No. of pins | 15 | 29 | 19-29 |
Compatibility | VGA to DVI VGA to HDMI using converters | DVI to HDMI DVI to VGA using converters | HDMI to DVI using converters |
Signal | Analog | Analog and digital | Digital |