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Touchscreen2010_Abs - Nick Letterly Elise Stockl Feifan...

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Nick Letterly, Elise Stockl, Feifan Wang ECE 317 Touch-screen Abstract September 21, 2010 Touch-screen Technologies Touch-screen technologies, once exciting novelties, are now commonplace. Touch-screens are employed on e-readers, cell phones, portable gaming devices, laptops, televisions and their remote controllers, vending machines, ATMs, and cash registers. Electromechanical interfaces, such as computer keyboards and mouses, are now enhanced using touch-sensitive control. Touch-screens simplify the use of and interaction with these devices. One of the distinct advantages of touch-screens is a shortened learning curve, where soft keys can be used to help guide the user through a particular process. The technology is very interesting, with some touch-screens employing conductive and resistive layers held apart by spacers containing an electrical current. Other technologies store an electrical charge on the panel of the device, and when touched, some charge is transferred to the user. This charge decrease is then measured and processed by the device.
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