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Screensavers Free Downloads Biography

Source:-Google.com.pk

A screensaver is a computer program that blanks the screen or fills it with moving images or patterns when the computer is not in use. Initially designed to prevent phosphor burn-in on CRT and plasma computer monitors, screensavers are now used primarily for entertainment, security or to display system status information.

Decades before the first computers utilizing this technology were invented, Robert A. Heinlein gave an example of how they might be used in his novel Stranger In A Strange Land (1961).

Many modern television systems, media players and other entertainment systems have a form of screensaver integrated. Most simply display a logo moving around the screen.

One increasingly popular application is for screensavers to activate a useful background task, such as a virus scan (for example, Avast comes with this feature, and it shows a screensaver [from your computer, you can choose it] with an overlaying blue window showing the progress. If a virus is detected, the window turns red and the scan is stopped, and the alert is shown once you exit the screensaver) or a distributed computing application .This allows applications to use resources only when the computer would be otherwise idle.

Screensaver software can also be used as a rudimentary security measure. Many screensavers can be configured to ask users for a password before permitting the user to resume work. However, a user might be able to circumvent the password by restarting the computer if the computer's owner has set their account to automatically log in upon startup

Screensavers Free Downloads Images Photos Pictures Wallpapers 2013