Wednesday 13 April 2011

Why Screen Savers are developed?

I believe everyone knows what is a screen saver. Theoretically, screen saver is a utility that causes a monitor's screen to display a moving image or blank screen if no keyboard or mouse activity occurs for a specified time. Then when you press on the keyboard or move the mouse, the screen saver will disappear and the screen returns to the previous state. 

However, have you ever thought of the reason screen saver is developed? Let's go straight to the answer. Screen savers originally were developed to prevent a problem called ghosting, in which images could be permanently etched on a monitor screen's (CRT monitor). Although ghosting is not a severe problem with today's Flat Panel Monitors but manufacturers continue to recommend that users install screen savers for this reason.

Furthermore, Screen Savers also are popular for security, business, and entertainment purposes. In order to secure a computer, a user can configure his/her screen saver to request for a password to deactivate it.

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