Tuesday 19 February 2013

Cool Wallpapers

Source(Google.com.pk)
Cool Wallpapers Biography
Multitasking computers are capable of executing several tasks, or programs, at the same time. In some multitasking systems, one of the processes is called the foreground process , and the others are called background processes.

The foreground process is the one that accepts input from the keyboard, mouse, or other input device. Background processes cannot accept interactive input from a user, but they can access data stored on a disk and write data to the video display. For example, some word processors print files in the background, enabling you to continue editing while files are being printed. This is called print spooling . In addition, many communications programs are designed to run in the background. Background processes generally have a lower priority than foreground processes so that they do not interfere with interactive applications.
Even though DOS is not a multitasking operating system, it can perform some specialized tasks, such as printing, in the background. Operating environments, such as Microsoft Windows and the Macintosh operating system, provide a more general multitasking environment.

The area of a display screen not covered by characters and graphics. The background is like a canvas on top of which characters and graphics are placed. Some monitors allow you to control the color or shading of the background.


The “supplements” for Cool Wallpapers come in the form of “diaries” that act as addendums to every episode. Each behind-the-scenes diary gives a detailed account of how that episode’s documentarian went about capturing the stunning and often dangerous-to-acquire footage. They feel less tacked on than like a satisfying extension to each episode and should be viewed by all watching this series in order to gain an even better perspective on the subjects explord.

Cool Wallpapers is an intriguing documentary series with exhilarating footage from the BBC cameramen and engaging narration by Sir David Attenborough. Regrettably, that is all hampered slightly by an inconsistent video transfer and underwhelming audio track. Still, this is a nature documentary that fans of this genre will surely appreciate, despite its faults and it is recommended as a strong, if not perfect, addition to any collection.
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