文档介绍：puter Monitors Work
by Jeff Tyson
puter display is a marvelous thing. An unassuming dark
gray surface can suddenly transform into an artist's canvas, an
engineer's gauges, a writer's page or your very own window to
both the real world and a huge range of artificial worlds!
Because we use them daily, many of us have a lot of questions
about our displays and may not even realize it. What does
"aspect ratio" mean? What is dot pitch? How much power does
a display use? What is the difference between CRT and LCD?
What does "refresh rate" mean?
In this edition of HowStuffWorks, we will answer all of these
questions and many more. By the end of the article, you will be
able to understand your current display and also make better
decisions when purchasing your next one.
The Basics
Often referred to as a monitor when packaged in a separate case, the display is the most-used
output device on puter. The display provides instant feedback by showing you text and
graphic images as you work or play. Most desktop displays use a cathode ray tube (CRT), while
puting devices such as laptops incorporate liquid crystal display (LCD), light-emitting
diode (LED), gas plasma or other image projection technology. Because of their slimmer design
and smaller energy consumption, monitors using LCD technologies are beginning to replace the
venerable CRT on many desk