A Touch Screen is a screen or display which detects the location of touch within a specific area on the display. To coin a meaning for this term- 'Touch Screen' it is to say that it is a screen that reacts to touch, usually from a finger or a hand, however, they can react also with other objects, normally a stylus. A Touch Screen will on work with that of a solid object, that is to say it will not react to lasers or light pens. From early touch screens to touch screens of the present it was on visable that it would react to one point of contact and no more than that, restricting the use of the touchscreen. Changes have begun to take place since the 1980s, becoming increasingly elaborate in the present with multi-touch technology.
Multi-touch technology is a term used for a touchscreen that recognises multiple simultaneous touch points. The effect is achieved in many different ways which vary in different creations of the multi-touch screen. These factors include the reaction to heat, finger pressure, infrared light, electromagnetic induction, high capture rate cameras, optic capture, transducer microphones, shadow capture and laser rangefinders.
Moving back to the touchscreen, two main factors can be derived from its purpose:
1) it allows you to interact with the attributes on the screen in a direct manner, rather than using an indirect approach of using a mouse or a keyboard.
2) it allows you to continue working with the display without the requirement of anything materialistic to control it.
Multi-touch technology is a term used for a touchscreen that recognises multiple simultaneous touch points. The effect is achieved in many different ways which vary in different creations of the multi-touch screen. These factors include the reaction to heat, finger pressure, infrared light, electromagnetic induction, high capture rate cameras, optic capture, transducer microphones, shadow capture and laser rangefinders.
Moving back to the touchscreen, two main factors can be derived from its purpose:
1) it allows you to interact with the attributes on the screen in a direct manner, rather than using an indirect approach of using a mouse or a keyboard.
2) it allows you to continue working with the display without the requirement of anything materialistic to control it.
This is an image of a single touch screen:
Below is an example of a multitouch screen:
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