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Everyone needs a good monitor because you make the most of your PC, but also to protect your eyes. But the type of monitor you need depends on several factors - what applications you use, how you space on your desk, you need space for both the virtual desktop and of course, how many money you have. From traditional CRT's, LCD and subtirelele to the 15-inch compact models to the "monsters" of 22, here you need to know before you get out of his pocket money.

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While in recent years have replaced an older PC, you probably chose to use old monitor on the new computer. There is no problem if it is still in shape - most monitors have a lifespan of five years - but if a 15-inch CRT that can barely read the text in 800 by 600, then the "larger- him. Most monitor manufacturers have entry-level models that combine low cost with minimal functions. These screens are only good for Web surfing, e-mail and other office requirements - as long as the appropriate resolution and offers good refresh rates.

Middle class and professional lines offer, but better image quality and extensive features such as more image adjustment buttons and USB ports, a wider set of ergonomic options (such as height adjustment for LCDs ) and higher resolutions. Historically, professional graphic designers have preferred CRT monitors because they offer more realistic colors and shades better. But many of them now use LCD high-end, which equals, in color, quality CRTs and at the same time, consumes twice less. Develop hardware and software for color calibration designed especially LCDs, has convinced many people to go on flat-panels. Greater brightness of LCDs to escape the limits on professionals dark studios. Those who work more with text have always inclined towards LCD because pixels on an LCD have well defined edges, resulting in very clear words figuratively. Gamers prefer CRTs for the first generation of LCD refresh rates were lower, but LCDs are much faster now.

Key Features: LCD

Native Resolution: for an LCD uses a matrix of pixels to display the image resolution is fixed (or native) who looks best. A 15-inch LCD has a native resolution of 1024 by 768, while models 17, 18 or 19 inches use on 1024 1280. If you set your monitor to a lower resolution than native, the picture will look blurry most likely because the display will use only some of the pixels continue and enlarge the resulting image to cover the entire screen.

Angle of view: because of how light passes through the liquid crystal display, LCD monitors look best when you sit directly in front of them. Any size monitor you are using a wide viewing angle is very important, especially if you know the real and consistent colors for design or for editing digital photos.
Brightness drops and colors change if you move sideways or up and down. This is one of the reasons that graphic designers prefer to use CRT's. But most of users may tolerate or even could not notice all the differences in brightness and color.
Measured garde, viewing angle of an LCD tells how much you can move left, right, above or below the center of the screen before the picture to deteriorate seriously. Each vendor has their own criteria for this, because there is no industry standard method of measuring the viewing angle. So the numbers are not comparable from one vendor to another, but may indicate differences in performance of the monitors produced by the same company.
The best way to judge the angle of view is to see the monitor with your eyes but you can get out of the question some models, even if the manufacturer says the angle is below a certain value. As the monitor is larger, the more important viewing angle. A 15-inch model, for example, will probably be used by one person, which will center the screen right in front and see the edges at an angle rather small - so a viewing angle of 120 degrees or higher is sufficient. In 17-inch screens or larger screen edges forming an angle greater look that stands directly in front of the center and, generally, such monitors are used for group work or presentations. So the best would be an angle of 150 degrees.

Contrast ratio: This term refers to the difference in light intensity between the white and the darkest black that the LCD product. Find a rate greater than or equal to 400:1. However, more is better, but only to a certain point. Ratios over 600:1 is hard to believe that it offers further advantages, especially as, however, vendors use a dubious maths when calculating those values.

Brightness: expressed in candelas per square meter (cd/m2) or niti, this specification measures the greatest amount of light coming from a screen that displays pure white. Nearly all LCDs have a brightness level of 250 cd/m2 or more, which should be more than enough. (In comparison, CRT monitors provide an average of 100 cd/m2 - although there are brighter and CRT sites.) Typically, vendors set up on the screens brightness to us to impress clients. But after using the monitor for a while, you'll want to decrease the brightness to protect your eyes.

Digital versus analog: If you have a video card with digital video output, choose an LCD with a digital input. The image will be converted from analog to digital and vice versa, so it will be clearer. Even if you do not have a DVI port on your sistemult, choosing a digital LCD makes sense for your next desktop PC probably will have a DVI port - and most monitors are digital and VGA (analog). Digital inputs can be found on more expensive LCD TVs. Notebooks were all too few digital outputs for external monitors. However, some notebooks can get DVI connection when they are attached to a docking station or port replicator.

Key Features: CRT

Resolution and refresh rate: a 17-inch CRT displayed a maximum resolution of 1600 by 1200 may seem high-end, but you can display that resolution at a 60Hz refresh rate, not to be impressed. A screen refresh rate indicates how many times the screen is redrawn in one second. At a refresh rate less than 70 Hz, your eye will detect a flicker of the screen. A higher resolution graphics, resulting in a "smooth" and can squeeze more information on the screen at once. But even if your monitor supports a higher refresh rate, the text and the icons should be big enough. At a resolution of 1600 by 1200 on a 17 inch, the text is unreadable, but most people can work comfortably at that resolution on a 21-inch model.

Size: While it is absolutely clear, do not forget how much space you have on your desk when you decide which monitor to buy. An average of 17-inch CRT monitor measures about 43 inches deep and weighs about 18 kg, while a 17-inch LCD (which offers almost the same image size as a 19-inch CRT) occupies half of space, with a depth 20 cm and weighing less than 7.5 kg.