Types of monitors n CRT n Cathode Ray

Types of monitors n CRT n Cathode Ray Tube n LCD n Liquid Crystal Display

CRT n The filaments at the back of the cathode tube shoot a beam of electrons to the screen at the front of the tube n This screen is coated with phosphor that glows when struck by the electron beam.

LCD n An LCD panel produces an image using a liquid crystal material made of large, easily polarized molecules

Features of a monitor

Video cards n Interface between the monitor and the computer. n Also called graphic adapters, video boards, graphics cards, or display cards. n Sometimes the video controller with a video port is integrated into the motherboard.

Video card

Methods of data transfer n RGB video port n standard method of passing three separate signals for red, green, and blue which most video cards and CRT monitors use. n uses a regular 15 -pin Super VGA port

Methods of data transfer n DVI port - Digital Visual Interface port n digital interface standard used by digital monitor such as a digital flat panel monitor, and digital TVs (HDTV). n for a video card that only has a DVI port, you can purchase a VGA converter so you can connect a standard VGA cable to use a regular analog monitor.

Methods of data transfer n S-Video – Super Video n this method sends two signals over the cable, one for color and the other for brightness, and is used by some high end TVs and video equipments. n it uses a 4 -pin round port

Flat Screen Monitors LCD - Plasma n Picture Quality Normal computing, both LCD and plasma screens will provide sharp and clear display n Watching Blu-Ray movies or playing highdefinition games, Plasma screens have less picture lag and sharper color resolution than LCD displays. n

LCD - Plasma n Power Usage n LCDs use considerably less power than plasma displays, which use self-lighting pixels n Screen Burn-In n Plasma screens are more likely to experience screen burn-in (the screen becomes permanently discolored where the unchanging image was)

LCD - Plasma n Pixel Levels n LCD screens generally have more pixels per square inch than plasma n makes them ideal if you are working with complex spreadsheet programs or editing software n Size n Plasma monitors are usually ahead of the curve regarding their maximum size n the biggest monitors are plasma