2007-01-29 22:18:11 · 4 answers · asked by Senthil 3 in Computers & Internet ➔ Software
http://en.wikipedia.org/wiki/Screensaver
2007-01-29 22:22:27 · answer #1 · answered by Anonymous · 1⤊ 0⤋
On older screens, not so much the newer ones, if you kept an image up on the screen, it eventually would "burn in". For instance, a bank or hotel desk that had a menu or entry screen, if left on all the time, would have the shadow of that image on all the time.
To fix that, "screensavers" were invented. They had an image - any image, even just words - that shifted around the screen constantly. The point was to keep pixels moving, not to sit on the same set of pixels for hours on end. These would "save the screen" from having an image burnt in, and preserve its lifetime.
2007-01-29 22:27:38 · answer #2 · answered by T J 6 · 0⤊ 0⤋
By moving points around they prevent screen burn.
2007-01-29 22:27:10 · answer #3 · answered by Anonymous · 0⤊ 0⤋
they conserve energy
2007-01-29 22:26:39 · answer #4 · answered by Anonymous · 0⤊ 0⤋