vista free wallpapers photos: Backgrounds For Computer

Wednesday, 12 December 2012

Backgrounds For Computer

Source(google.com.pk)

Backgrounds For Computer 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 first thing you need to consider in choosing a new desktop is the resolution and shape of your screen. (If you already know, these, skip ahead to the next paragraph.) Resolution means the number of pixels on your screen. To find out your resolution in Windows XP, right-click on an empty spot on your desktop, click on Properties, and then click on the Settings tab in the window that appears. In Windows Vista, right-click on the desktop, click on Personalize, and then click on Display Settings. In the lower left you should see your screen's resolution displayed as two numbers: the width of your screen in pixels, and its height. While Windows will let you use an image of any size as your desktop, it will look best if you use one that has the same width and height in pixels as your screen or greater. Whether you have a widescreen monitor or not is also worth considering. While a widescreen desktop will still work on a standard (non-wide) screen, and vice versa, some elements might get cut off at the edges. Now that you know what size and shape of desktop you're looking for, you can hit the desktop sites and find one that suits you.

You might guess that a desktop gallery by National Geographic would be stocked full of stunning images of nature and culture, and you'd be right. National Geographic has page after page of beautiful photographs, all available several resolutions.

One of the biggest online libraries of digital art is deviantART, and they've got a huge desktop selection that's constantly growing. From the main desktop page you should check out the Categories drop-down, where you can choose from thirty different categories from Science Fiction to Architecture. Clicking on a thumbnail will take you to a page with a bigger picture and details about the desktop. Most have a Download button on the left that will let you the full-sized image in one or more resolutions, often in a ZIP or RAR file.

If you're fond of photographs for your desktop, popular photo-sharing site Flickr is a great place to look. A quick search for the term desktop turns up thousands of results. A good way to narrow them down is to chose the Most Interesting view, which sorts the pictures accordig to Flickr's cool "interestingness" algorithm. If you're into a particular subject matter, you can add it to your search, for example fish desktop. Once you've clicked on the thumbnail of an image you like, you can click on the "All Sizes" button with the magnifying glass icon to get the full-sized image.

If outer space is your thing, there are several sources for great cosmic vistas, both real and imaginary. NASA's Jet Propulsion Laboratory has a great selection of interstellar pictures as well as some more down-to-earth ones, as does Space.com. Finally, NASA's Astronomy Picture of the Day releases a new mind-blowing image every day, most of which are plenty big and plenty pretty to serve as your desktop.

For otherworldly computer-generated desktop pictures, Digital Blasphemy is a great source. While you'll have to pay $25 a year or $99 for a lifetime membership to get access to the full selection, its small free gallery features twenty lovely images that should keep your desktop looking great for a few months at least.

Caedes sums itself up tidily as "a close community of artists, designers, and photographers who share their work through the medium of computer desktop desktop." It has dozens of categories from Underwater to Holiday and media including photography, computer graphics, and illustration. There's no shortage of lovely and striking images to be found at Caedes.

As the online encyclopedia that has its fingers in everything, it should come as no surprise that Wikipedia has its own desktop gallery. In this case, most of the images are pictures from Wikipedia's millions of articles, but some of them make brilliant desktops. It also has a widescreen collection. Most of the pictures are of the natural world, but you'll also find a bit of art, architecture, technology, and more.

These seven sites offer a superb collection of desktops and should keep your desktop fresh and exciting for many months, if not for the rest of your computer's natural life.

Backgrounds For Computer