Bugün öğrendim ki: ekran koruyucuların orijinal olarak, uzun süreli ve değişmeyen kullanım nedeniyle CRT ekranlarını bir görüntüyü ekrana "yakmaktan" "kurtarmak" için oluşturulduğunu.

Computer program that blanks the screen or fills it with moving images A **screensaver** (or **screen saver** ) is a [computer program](/wiki/Computer_program "Computer program") that blanks the screen or fills it with moving images or patterns when the computer has been idle for a long time. The original purpose of screensavers was to prevent phosphor [burn- in](/wiki/Screen_burn-in "Screen burn-in") on [CRT](/wiki/Cathode_ray_tube "Cathode ray tube"), plasma and [OLED]( /wiki/OLED "OLED") [computer monitors](/wiki/Computer_monitor "Computer monitor") (hence the name). Though modern monitors are not susceptible to this issue, screensavers are still used for other purposes. Screensavers are often set up to offer a basic layer of [security](/wiki/Computer_security "Computer security"), by requiring a password to re-access the device. Some screensavers use the otherwise unused computer resources to do useful work, such as processing for [distributed computing](/wiki/Distributed_computing "Distributed computing") projects. As well as computers, modern television operating systems, media players and other digital entertainment systems may include optional screensavers.