Because the monitor is the primary visual component of the computer, it is one of the most important elements of your workstation. When purchasing a computer system, it is important to note that the monitor included in that package may not be the best one for you. Here are some factors to consider when making your purchase:

• Color quality: Notice how accurately the monitor reproduces colors. The weight given to this factor depends on the purpose for which the monitor is being used. If it is primarily used for word processing or similar functions, this factor may be relatively unimportant. If it is used primarily for graphic design then it may be relatively important.
• Image quality: Observe whether the image displayed on the monitor appears well focused. A distortion-free image is very important.
• Ergonomics: Adjustment controls (such as the brightness and contrast buttons) should well-placed and easy to use. The monitor should have a range of motion that permits relatively effortless tilting and swiveling. Make sure that there is sufficient room within your workspace to accommodate the monitor and its base.
• Size: Fourteen-inch monitors were the standard a few years ago but the technology has advanced (and the price has declined) so that your minimum purchase should probably be a 15-inch monitor. If you spend most of your time working at resolutions no higher than 800x600, a 15-inch monitor should provide you with enough room for applications such as word processing and database entry. If you work at resolutions of 1024x768 or higher, you're probably better off with a 17-inch monitor.
• High refresh rates: These help eliminate screen flicker. For most people, a rate of 72Hz to 75Hz is enough to achieve the desired results; a rate less than 70Hz will result in obvious flicker and can lead to eyestrain and headaches

If possible, don't buy a monitor sight unseen. Find a store where you can test and compare a number of models. Check for margins of black around the screen edges. Ideally, the image should fill the screen from top to bottom and left to right, and should be adjustable. Check also for color distortion and poor convergence on the edges of the screen, and see if the controls improve what you see.