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Screen Touch


Touch Screen : A Basic Primer

Touch screen is a combined input and output device through which a technical device can be controlled directly by touch. The technical implementation of the command prompt to the user is invisible and creates the impression of direct control of the device by touching the screen. The image formed Touch screen can be made ​​touch-sensitive, can be generated in several ways : by dynamically monitors, projection or physically. Previously we published articles related to Touch Screen and Display Screens, like an Android device uses a Touch Screen. In this article, we will briefly discuss on Touch Screen.

The Technology Behind Touch Screen

By dragging your finger or stylus on a touch screen, a drag and drop operation can be performed. Some systems can handle multiple simultaneous touches – multi-touch, for example, to rotate or scale displayed images. There are several operating principles for the implementation of the sensitivity :

Resistive systems
Capacitive systems
Inductive Systems
Surface Acoustic Wave
Optical systems
Dispersive Signal Technology