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Glossary
- Cathode Ray Tube (CRT)
- A CRT works by moving an electron beam back and
forth
across
the back of the screen coated with phosphors. CRT's are used in most
televisions and computer monitors.
- Direct-Drive Image Light
Amplifier
(D-ILA): technology developed by JVC
- uses reflective liquid crystal device More info can be found
here!
- Digital Light Processing
(DLP): technology developed by Texas
Instruments
- DLP uses tiny mirrors housed on a microchip called
a
Digital
Micromirror Device (DMD). Each of the mirrors corresponds to one pixel
of the display image.
More info can be found
here!
- Liquid Crystal Displays
- LCD displays utilize two sheets of polarizing
material
with a
liquid crystal solution between them. LCD screens are used on all
laptops.
- Power Walls
- Resolution
- Resolution is usually expressed in terms of the
number
of
lines (Horizontally) x (Vertically). The higher the resolution, the
sharper the image.
- CGA: 640 x 200 resolution = 128,000 pixels (1981)
- MDA: 720 x 350 resolution = 252,000 pixels (1981)
- EGA: 640 x 350 resolution = 224,000 pixels (1985)
- VGA: 640 x 480 resolution = 307,200 pixels (1987)
- SVGA: 800 x 600 resolution = 480,000 pixels (1989)
- XGA: 1024 x 768 resolution = 783,360 pixels (1990)
- WXGA: 1280 x 768 resolution = 983,040 pixels
- SXGA: 1280 x 1024 resolution = 1,310,720 pixels
- UXGA: 1600 x 1200 resolution = 1,920,000 pixels
- QXGA: 2048 x 1536 resolution = 3,145,728 pixels
- Broadcast Resolution
- NTSC: 664 x 484
- PAL/SECAM: 756 x 574
- HDTV: 1920 x 1080
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