Why the screensaver is called screensaver


← Screensaver →
(2007) A screen saver is a program that replaces the current screen content with moving graphics or a black area during work breaks. This does not (or only insignificantly) protect the screen, but at least the screen content is protected from prying eyes. Actually, one should translate “screen saver” with “screen protector”.
(1999) With old monochrome monitors, on which the same application was always used day in, day out, after a few months (and even after a few weeks if the picture was set too brightly) individual elements that almost never changed (for example a constantly displayed menu) can also be recognized in other applications, since the luminous layer at the constantly activated points had changed permanently. The image had, so to speak, "burned" into the luminescent layer.
For monitors that had to be switched on all day, programs were used that deleted the screen content after a while without pressing a button or replaced it with a constantly changing pattern.
It is astonishing that after the monochrome monitors became extinct, screen savers still exist, although very few people have ever seen a color monitor with screen content burned into the luminous layer (poorly maintained ATMs are perhaps an exception).
The programs that are now called "screen savers" are, completely contrary to their alleged effect, often computationally intensive graphics demos, which mean that the CPU is kept warm even during work breaks, so that it wears out faster and you have to buy a new PC sooner.