Monitor SizeViewing AreaMinimum resolutionMaximum ResolutionMonitor Horizontal frequency needed 15”13.5640x4801024x76838KHz-60KHz 17”15.5800x6001280x102447KHz-80KHz 19”17.51024x7681280x102460KHz-80KHz 21”19.51024x7681600x120060KHz-95KHz One of the most important items of a computer is the monitor and it should be the most expensive single element of your system. The monitor is the part of the computer we are always watching at and the eyes are most the sensitive organs we use while working with a computer. Therefore when buying a computer the best thing to do is spend at least one third of the budget on a good and reliable monitor. Moreover as technology develops the price of appropriate monitors is becoming even affordable, for example, two years ago it was a luxury for anyone to buy a 17 inches monitor, today it is almost essential to use a 17 inches monitor especially in the multimedia sector. Furthermore in today’s market we found a large amount of supply and diversity, monitors basically can be classified in three types of display technology: Cathode Ray Tube (CRT), Liquid Crystal Display (LCD, usually in laptops or notebooks) and Flat screen (professional use, very expensive for home or personal use). Monitors can also be classified by size; here is a table of the most common monitor sizes together with the viewing area, resolution and the frequency needed.(Data from http://www.csf.org.uk/)CATEGORIESCRTThe majority of monitors are based on Cathode Ray Tube (CRT) technology. These are cheap and reliable. The CRT technology has been deeply evolved and CRTs offer a reasonable high quality of colour images on desktop computers together with low costs. The size usually varies from 15” to 17”. Although curves screens distort the image and the screen reflections that may happen with CRTs cause eyestrain. CRTs are not very high in resolution and they take a lot of space in your workplace. LCDThe...
