Which monitor will you perfer in your school;CRT OR FPD? why?
Answers
Answer:
CRT
Explanation:
The cathode-ray tube is a vacuum tube that contains one or more electron guns and a phosphorescent screen, and is used to display images. It modulates, accelerates, and deflects electron beam onto the screen to create the images.
While CRT TVs and monitors are readily available on Craigslist or your local thrift store (sometimes even for free) only a handful of models support the widescreen aspect ratios that some modern games require.
A CRT monitor contains millions of tiny red, green, and blue phosphor dots that glow when struck by an electron beam that travels across the screen to create a visible image. Electrons are negative. The anode is positive, so it attracts the electrons pouring off the cathode.
Answer:
The answer of the following question is FPD or Flat Panel Display.
Explanation:
FPD monitor will prefer in our school.
FPD used as compare to CRT because , FPDs have the following advantages:
- Brightness
FPDs on average are brighter than CRTs. A CRT may have brightness of about 100 candelas/square meter, while a high-quality 15-inch FPD might be rated at 300 nits. This brightness disparity decreases a bit in larger sizes.
2. Contrast
Contrast usually measures the difference in luminance between brightest and dimmest portions of an image, and expressed in ratio. The ability to display a high-contrast image is an important aspect of image quality, particularly for text. An average CRT monitor ratio of 200:1 and An inexpensive FPD contrast ratio of 200:1.
3. Usability in bright environments
Even good flat-screen CRTs are subject to objectionable reflections when used in bright environments while FDP are not.
NOTE : Today in Schools LED or LCD is used widely due space and effectiveness.