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Wallpaper (desktop image and desktop background) is an image used as a background of a graphical user interface on a computer screen or mobile communications device. It is usually a computer desktop, while its mobile phone is usually the bottom of the screen to "rest", "home" either. [http://www.chinaphotomall.info china photo mall] Though most devices comes with a default picture, users can typically modify the files of their choice. [1]

"Background" is the term used in Microsoft Windows before Windows Vista (where it is called the "bottom" of the Ministry), while Mac OS X calls "desktop image" (previously, the pattern desktop term was used to refer to a baking repeating itself to fill the screen).
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The X Window System was one of the first systems that include support for an arbitrary image as wallpaper via Program xsetroot at least been X10R3 release in 1985 could tile the screen with a solid color or a binary bitmap file X. [http://www.chinaphotomall.info car wallpapers] sleep 1989 free software called xgifroot released enabled GIF color arbitrarily to be used as wallpaper,  and the same year was published program xloadimage off the screen can display a variety of image formats (including color images in raster Sun) background. [http://www.chinaphotomall.info selebrities wallpapers] Later the number of programs were released that added wallpaper support for additional image formats and other features, such xpmroot Plan (published in 1993 as part of fvwm [5]) and XV software (released in 1994).
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"Live Wallpaper" is a type of application that runs on a mobile device using the Android operating system. Application works as a wallpaper - providing the background image of the home screen, but also works as an application in conventional since it can provide user-interaction with the touch screen (allowing the image to change dynamically, for example) and access other hardware and software features within the device (accelerometer, GPS, network access , etc). [13]
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Similar functionality can was found on the Active Desktop feature of Windows 98 and later. There are also third-party software that provide this function for different operating systems.

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