19-09-2017, 04:11 PM
A touch screen is an input and output device normally laminated to the top of an electronic visual display of an information processing system. A user can input or control the information processing system through simple or multi-touch gestures by tapping the screen with a special pen or one or more fingers. Some touch screens use ordinary or specially coated gloves to work on, while others can only work with a special pen or pencil. The user can use the touch screen to react to what is displayed and, if the software allows, to control how it is displayed; for example, zoom to increase the text size.
The touch screen allows the user to interact directly with what is displayed, rather than using a mouse, touchpad or other similar devices (other than a stylus, which is optional for most modern touch screens).
Touch screens are common in devices such as game consoles, personal computers, tablet computers, electronic voting machines, point of sale (POS) systems, and smartphones. They can also be connected to computers or, as terminals, to networks. They play a prominent role in the design of digital devices, such as personal digital assistants (PDAs) and some electronic readers.
The popularity of smartphones, tablets and many types of information devices is driving the demand and acceptance of common touch screens for portable and functional electronics. Touch screens are in the medical field, heavy industry, ATMs and kiosks, such as museum exhibitions or room automation, where keyboard and mouse systems do not allow intuitive, fast or accurate user interaction with the contents of the screen.
Historically, the touch screen sensor and its corresponding controller-based firmware have been made available by a wide range of aftermarket system integrators and not by manufacturers of screens, chips or motherboards. Screen manufacturers and chip makers have recognized the trend towards the acceptance of touch screens as a user interface component and have begun to integrate touch screens into the fundamental design of their products.
The touch screen allows the user to interact directly with what is displayed, rather than using a mouse, touchpad or other similar devices (other than a stylus, which is optional for most modern touch screens).
Touch screens are common in devices such as game consoles, personal computers, tablet computers, electronic voting machines, point of sale (POS) systems, and smartphones. They can also be connected to computers or, as terminals, to networks. They play a prominent role in the design of digital devices, such as personal digital assistants (PDAs) and some electronic readers.
The popularity of smartphones, tablets and many types of information devices is driving the demand and acceptance of common touch screens for portable and functional electronics. Touch screens are in the medical field, heavy industry, ATMs and kiosks, such as museum exhibitions or room automation, where keyboard and mouse systems do not allow intuitive, fast or accurate user interaction with the contents of the screen.
Historically, the touch screen sensor and its corresponding controller-based firmware have been made available by a wide range of aftermarket system integrators and not by manufacturers of screens, chips or motherboards. Screen manufacturers and chip makers have recognized the trend towards the acceptance of touch screens as a user interface component and have begun to integrate touch screens into the fundamental design of their products.