A touch screen sensor is a clear glass panel with a touchresponsive surfaceThe sensor generally has an electrical current or signal goingthrough it and touching the screen causes a voltage or signalchange
The controller is a small PC card that connects betweenthe touch sensor and the PC The controller determines what type ofinterface/connection you will need on the PC
The driver is a software that allows thetouch screen and computer to work together Most touch screen drivers today are amouse-emulation type driver
ADVANTAGEUser friendlyFast responseError free inputUse finger, fingernail , stylus or any soft tippointerEasy to cleanDoes not interfere mouse and keyboardMake computing easy, powerful and fun
DISADVANTAGE Having a big bright screen and needing massivecomputing power to run this means a very lowbattery life In direct sunlight it is much less efficient andmost of the time very difficult to read the screen If a touchscreen device are to crash the wholescreen would be unresponsive, and because of thelack of buttons recovering it would be verydifficult They usually cost more than other devices
Public Information Displays:::Tourism displays, Trade show displayCustomer Self-Services:::Stores, Restaurants, ATMs, Airline ticketterminals and Transportation hubs.More uses...Computerized gaming, Multimedia software ,Scientific applications , mobile phones etc.
Though the touch screen technology contains somelimitations but it’s very user friendly, fast, accurate, easyfor the novices & fun to operate. It has been widelyaccepted. And now by just modifying a little it can replacethe mouse and key board completely in near future