upgrading and repairing PCs technicians ... - 400 Bad Request

238
Monitor Resolution
Resolution is the amount of detail a monitor can render. This quantity
is expressed in the number of horizontal and vertical picture
elements, or pixels, contained in the screen. The greater the number
of pixels, the more detailed the images. Pixels also are referred to as
pels, which is short for picture elements. The resolution required
depends on the application. Character-based applications (such as
DOS command-line programs) require little resolution, whereas
graphics-intensive applications (such as desktop publishing and
Windows software) require a great deal.
CRTs Versus LCDs
CRTs can handle a wide range of resolutions, but LCD panels of
any type must use scaling to change to resolutions other than their
native setting.
Common Monitor Resolutions
Table 10.2 shows standard resolutions used in PC video adapters
and the terms commonly used to describe them.
Table 10.2 Monitor Resolutions
Resolution Acronym Standard Designation
640×480 VGA Video graphics array
800×600 SVGA Super VGA
1,024×768 XGA Extended graphics array
1,280×1,024 UVGA Ultra VGA
However, the terms SVGA, XGA, and UVGA have fallen into disuse.
The industry now describes screen resolutions by citing the number
of pixels. Nearly all the video adapters sold today support the
640×480, 800×600, and 1,024×768 pixel resolutions at several color
depths, and most now support 1,280×1,024 and higher as well.
Note
Chapter 10—Video and Audio
To understand this issue, you might want to try different resolutions
on your system. As you change from 640×480 to 800×600
and 1024×768, you’ll notice several changes to the appearance
of your screen.
At 640×480, text and onscreen icons are very large. Because the
screen elements used for the Windows desktop and software menus
are at a fixed pixel width and height, you’ll notice that they shrink
in size onscreen as you change to the higher resolutions. Some