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English: World map showing current and past daylight saving time usage. The Spring-forward/Fall-back adjustment is a common practice at high latitudes. The Spring-forward/Fall-back adjustment is a common practice at high latitudes.
After Dark is a series of computer screensaver software introduced by Berkeley Systems in 1989 for the Apple Macintosh, and in 1991 for Microsoft Windows. [3] [4]Following the original, additional editions included More After Dark, Before Dark, and editions themed around licensed properties such as Star Trek, The Simpsons, Looney Tunes, Marvel, and Disney characters.
A screensaver (or screen saver) is a computer program that blanks the display screen or fills it with moving images or patterns when the computer has been idle for a designated time. The original purpose of screensavers was to prevent phosphor burn-in on CRT or plasma computer monitors (hence the name). [ 1 ]
The free software and open-source Unix-like operating systems running the X Window System (such as Linux and FreeBSD) use XScreenSaver almost exclusively. [citation needed] On those systems, there are several packages: one for the screen-saving and locking framework, and two or more for the display modes, divided somewhat arbitrarily.
Day side: Image:Earthmap1000x500.jpg (public domain) Night side: Image:Earthlights dmsp.jpg (public domain) The graph is nonscientific ; roughly adopted from Image:Daylight.png , in addition the graph form ( yearly average ) and the additional shadow area was assumed from Daylight Time Map , DaylightMap png and ConstructAfrique .
Bliss, originally titled Bucolic Green Hills, is the default wallpaper of Microsoft's Windows XP operating system. It is a photograph of a green rolling hills and daytime sky with cirrus clouds.
The BOINC Manager working on the SETI@home project (v 7.6.22) Screenshot of SETI@home Classic Screensaver (v3.07) The SETI@home volunteer computing software ran either as a screensaver or continuously while a user worked, making use of processor time that would otherwise be unused.
Windows Spotlight is a feature included with Windows 10 and Windows 11 which downloads images and advertisements from Bing and displays them as background wallpapers on the lock screen. In 2017, Microsoft began adding location information for many of the photographs.