Abstract
The main feature of any video device is the screen. The first video or TV screens were cathode ray tubes (CRT) and those are still used in older TV sets and computer monitors. The most commonly used TV and video screen today is the LCD. LCD screens are used in the newer TV sets and in most personal computers. Nothing in electronics has affected us more than the development of television. TV came first and has been working its magic on us for far longer. The impact of television or video on our lives is significant in that one spends more than half our waking hours in front of a TV screen, either watching TV or working with a video monitor on a computer. The social and political impact has been enormous. And, of course, people also interact with the liquid crystal display (LCD) screens on cell phones, laptops, and personal navigation devices. For this reason it helps to understand a little bit about how video works. Video is perhaps one of the most complex segments of electronics, but this chapter makes those fundamentals easy to understand.
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