Screen resolution refers to the number of pixels displayed on your computer screen at one time. A pixel is a small coloured dot of light. Web pages are often designed to look best with particular screen resolutions such as 800 pixels x 600 pixels or 1024 pixels x 768 pixels.
A screen image is composed of thousands of small dots called pixels. The smallest piece of the screen that can be controlled individually is called a pixel and each pixel can have its own color and intensity. Hundreds of thousands of pixels together make up what you see on your screen (monitor). A screen’s resolution, therefore, is the maximum number of displayable pixels. The higher the resolution on a monitor, the more pixels it can display. Additionally, the higher number of pixels that can be displayed on screen the clearer the image.
Your operating system should allow you to change your screen resolution easily using the Display Properties control panel (Windows) or the Monitors and Sound control panel (Macintosh). For more information consult your operating system manual, or Windows Help, or the content below.
Note that the capacity to display different resolutions is determined by both your monitor's capability and the video display driver installed on your computer. If you are sure you have the correct video driver installed but still cannot display the resolution you want, it may be that your computer or monitor is too old to support higher resolutions.
How To Configure The Screen Resolution In Windows XP Professional
This section provides an overview of how to change screen resolution on Windows XP Professional or Home based personal computers.
( a ) Left click Start.
( b ) Left click Control Panel.
( c ) In the Windows Control Panel, double left click the Display icon.
This will load the Display Properties window as shown in the following picture.
The Display Properties window will show any multi-monitor support that is installed on the system.
You can change the resolution of a specific desktop by left clicking the number of the desktop you want to change and dragging the slider Screen Resolution.
To increase the resolution (make items appear smaller on your screen) drag the slider right.
To decrease the resolution (make items appear larger on your screen) drag the slider left.
To change the color quality select a value from the color quality list-box.
Left click OK to confirm all changes.
Left click Cancel to abort all changes and close the Window.
Left click Apply to confirm all changes and keep the window open.
The current screen resolution setting is listed under the Screen Resolution box. If the value listed is 640 x 480, and no other values are selectable, then you will need to uninstall and reinstall the drivers for your video card.
Normal values selectable in this box include:
1024x768 or higher.
Additionally, in the Color quality box, if the only selectable option is a low value such as 8 colors or 16 colors, then more than likely this is a driver issue and you could try re-installing the device drivers for the component that you are having the problem with.
Normal values selectable in the color quality box are 16-bit (16 million colors) or 24-bit (24 million colors).