2006-07-14 19:31:26 · 10 answers · asked by nathpankaj 1 in Computers & Internet ➔ Other - Computers
Along time ago, older CRT monitors were pretty crappy, and the image displayed on the screen would actually burn itself into the monitor if the image remained static (ie; was not moving). So they came out with a piece of software that would display a moving image of some kind at regular intervals when the computer wasn't doing anything to "save" the screen. Viola! The screensaver is born. Nowadays, monitors are of a quality that burn-in doesn;t happen, but Screensavers have become a fun way customize a computer.
2006-07-14 19:37:06 · answer #1 · answered by ddesa 4 · 0⤊ 0⤋
An image left on the computer screen for an extended period of time, could "burn" into the monitor's screen, causing you to see it faintly all the time.
Screen savers work by not allowing a screen to burn itself into the monitor by using "motion" through screen savers to mix the colors around.
A monitor will still work even after an image has been burned into it, but it may become an annoyance.
2006-07-14 19:35:44 · answer #2 · answered by G33K 3 · 0⤊ 0⤋
Monitors are the CRT tubes. Inside teh CRT we have a cathode ray gun which keep on emiting rays towards the glass on the CRT. The glass of CRT contains chemical which emitts light when ray strikes it. and light is for a small fraction of time only. so keep the image on the screen the ray keep on shooting ray.
So if we doesn;t change the image for a long time, same pixels or same spots of chemical gets strike. thus resulting in chemical loss. and monitor life is reduced. to avoid this we use the "screen savers".
which protects the screen from burnout. It keeps on changing the image on the screen.
2006-07-14 19:39:18 · answer #3 · answered by royal 3 · 0⤊ 0⤋
Screen savers aren't needed anymore on today's monitors or even years ago. It's back in the olden days of CRT monitors that they were needed because of how the cathode ray tube was implemented. It's safe to leave your screen on without a screensaver for today's CRT monitors. Believe me, if you run your PC 24/7 like me, you don't have to worry. Nowadays, they're just for aesthetic purposes.
2006-07-14 19:40:56 · answer #4 · answered by Anonymous · 0⤊ 0⤋
Screen savers keep moving the image around so you don't get burned in images on the screen,constant images leave themselves in the screen,ever so faintly but they are there. this is very annoying when you see double images on the screen,always use a screensaver.
2006-07-14 19:36:12 · answer #5 · answered by gr8leaf 3 · 0⤊ 0⤋
Because it saves your computer from getting the image burned into the screen (old monitors)
2006-07-14 19:34:56 · answer #6 · answered by babygurl_u_want_in_life 3 · 0⤊ 0⤋
when an image is sent through a screen the electrons cause the phosphorus to emit light (giving you the image) if these electrons remain constantly fixed in one position (one image) these phos. molecules become "locked" into that image. to prevent locking (or screen burning) a moving, changing image is displayed and don't burn an image into the phosphors.
2006-07-14 19:40:21 · answer #7 · answered by Anonymous · 0⤊ 0⤋
They are used to keep images from being burned into the old CRT style monitors. The newer flat panel monitors are not susceptible to image burn in though
2006-07-14 19:35:05 · answer #8 · answered by DL 6 · 0⤊ 0⤋
cause they save your screen from being a boring blue colour
2006-07-14 19:34:55 · answer #9 · answered by julie m 2 · 0⤊ 0⤋
Because it decrease the power usage of monitor
2006-07-14 19:34:08 · answer #10 · answered by Raveesh 2 · 0⤊ 0⤋