A touch screen display has three primary components that allow it to function: the touch sensor, the controller, and the software driver. The software driver is the application program that transcribes touch sensations into commands and communicates with the operating system installed on the computer. The controller is a PC card that connects the touch sensor to the PC. It is a small gadget that translates information from the touch panel into information that is comprehensible to the PC.
There are several touch sensitive technologies applied in manufacturing touch-screen displays. The display can be based from resistive, capacitive, or surface wave sensory technology. Beside on computer, this technology is also used in embedded computer, devices, and mobile phones. The trend of the touch panel is popular now in restaurant or even in supermarket. In the supermarket there a a self checkout section. Which usually you will see touch screen monitors with RFID readers to read the barcode on the item. The growth of the technology has made the life easier.
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