A.J. Guzman

Najinder Mann

Terry Bankhead

HARDWARE

REPORT

• CRT stands for Cathode Ray Tube.

• Both televisions and monitors can be made using CRT technology.

• CRT monitors are deeper and wider than their LCD counterparts.

• They also have more vivid colors and a longer life

• The major components of a CRT monitor are the fluorescent screen and electron guns.

• Liquid Crystal Display

• A thin, flat electronic visual display

• uses the light modulating properties of liquid crystals.

• LCDs are more energy efficient andoffer safer disposal than CRTs.

• Its low electrical power consumptionenables it to be used in battery-powered electronic equipment.

• It is an electronically-modulated optical device madeup of any number of pixels filled with liquid crystals and arrayed in front of a light source (backlight) or reflector to produce images in color or monochrome.

• LED stands for Light Emitted Diode

• LED display has a background produce with LED instead of the convectional fluorescent LED

• Newest types of computer monitors on the market today.

• Cathode-ray tube monitors were the first computer monitors out.

• CRT monitors contain millions of tiny red, green, and blue phosphor dots that glow when struck by an electron beam.

• A shadow mask is a thin metal screen filled with very small holes.

• Three electron beams pass through the holes to focus on a single point on a CRTdisplays' phosphor surface.

• The unwanted beams are blocked or "shadowed."

• Next step in the line up of computer monitors.

• These monitors work by blocking light

• An LCD Monitor is made up of two pieces of polarized glass

• Electrical currents cause the liquid crystals to align to allow different levels of light to pass through to the second substrate and create the colors and images that you see.

• http://static.howstuffworks.com/flash/lcd-twisted.swf

• http://www.ehow.com/video_4973278_a-computer-monitor-work.html

• Light Emitting Diode displays are the most recent line up of monitors.

• The Diode emits light when stimulated by an electrical current, which is known as electroluminescence.

• LEDs consist of red, green and blue elements, which combine to create the desired colors.

• Advantages of LEDs include lower power requirements

• Less-expensive manufacturingprocess, and improvements in contrast and color.

• Since LED monitors are the newest of the monitors, they have the highest average cost.

• On average a LED monitor can cost from $200 to $400.

• A budget-priced LCD monitor can be purchased for about $100 to $200.

• The average CRT monitors cost as cheap as $50 to somewhere around $200.

• CRT monitors are the oldest of the three types of monitors therefore they are the cheapest.

1. How does a CRT monitor work?

• Phosphor dots glow when struck by an electron beam, to create the picture that we see.

2. What are the 3 types of computer monitors?

• LCD, LED, CRT.

3. What does CRT stand for?

• Cathode-ray Tube.

4. What does LED stand for?

• Light Emitting Diode.

5. What does LCD stand for?

• Liquid Crystal Display.

6. What 3 colors are LED lights?

• Red, Blue, Green.

7. When a Diode Emits light what is it known as?

• Electroluminescence

8. What is a shadow mask?

• A shadow mask is a thin metal screen filled with very small holes.