What Does Screensaver Mean?
A screensaver is a computer application that blanks the screen of the computer when it is inactive or fills it with images or patterns. Originally designed to avoid phosphor burn-in on plasma and CRT monitors, it is now mostly used for security, showing system information, entertainment and other functions.
Techopedia Explains Screensaver
Screensavers can be written in various programming languages or designed using a variety of tools. When the system becomes idle, the operating system activates the screensaver, which causes the physical display screen to either go blank or be overlaid with graphics as provided in the display settings. The screensaver is terminated when the mouse is moved or a key on the keyboard is pressed. Sometimes it may ask for a password before returning control to the user.
