What are they? How do they work? Lets find out.
What are Touch screens?
A Touch screen is an electronic visual display that the user can control through simple or multi-touch gestures by the screen with one or more fingers. The touch screen enables the user to interact directly with what is displayed, rather than using a mouse, touchpad, or any other intermediate device.
How do they work?
Some touch screens can also detect objects such as a stylus or ordinary or specially coated gloves. The user can use the touch screen to react to what is displayed and to control how it is displayed.
Official Apple iPad Mini Trailer