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Touch Screens - Research Paper Example

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Touch screens are highly susceptible towards pressure. Its user works with touching in different directions or on the pictures that are displayed on the…
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Touch Screens
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Touch Screens

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The foremost model of contemporary touch screen with a transparent surface was then invented during 1974 by Dr Sam Hurst with his co-workers. Then the launch of touch screens with the five wire resistive technology took place during 1977. This technology is still in use by several companies that are making touch screen devices. During 1994, its name was changed from Elographics to Elo Touch Systems by the company. (Shelly, 2009, 01) These days a large number of both virtual and non virtual applications are making use of Touch-screen technology. It is estimated that there will be a yearly 25% increase in its usage in upcoming years.
The board for Resistive Touch Screen is covered by a conductive layer of metal and a resistive coating that causes an alteration in the electric current which is recorded in case of a touch event and then delivered to the controller for further proceeding. Resistive touch screen panels are usually more reasonably priced but propose only 75% transparency and the coating can be scratched if sharp objects are used on the screen. Such types of touch screen panels remain unaffected from external pollutants e.g. dirt or water.
This type of screens employs ultrasonic waves which pass over the touch screen board. When the screen is touched by the user, a fraction of the wave is taken up by the panel. This variation in the ultrasonic waves records the place of the touch occurrence and delivers this information to the regulator for further processing. This type of touch screens are the most modern type of the touch screens, however, these screens can easily get harmed due to external elements.
This type of touch screens are covered with a substance that reserves electrical charges. When the user touches this type of screen, a minute fraction of charge comes out at the position of contact. (Nicholas, 2005, 316) There are circuits, present at all the corner ...Download file to see next pagesRead More
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