Touchscreen Technology
A touchscreen is an electronic
visual display that the user can control through simple or multi-touch gestures
by touching the screen with a special stylus/pen and-or one or more fingers.
Some touchscreens use ordinary or specially coated gloves to work while others
use a special stylus/pen only. The user can use the touchscreen to react to
what is displayed and to control how it is displayed (for example by zooming
the text size).
The touchscreen enables the user
to interact directly with what is displayed, rather than using a mouse,
touchpad, or any other intermediate device (other than a stylus, which is
optional for most modern touchscreens).
Touchscreens are common in
devices such as game consoles, personal computers, tablet computers, and
smartphones. They can also be attached to computers or, as terminals, to
networks. They also play a prominent role in the design of digital appliances
such as personal digital assistants (PDAs), satellite navigation devices,
mobile phones, and video games and some books (Electronic books).
The popularity of smartphones,
tablets, and many types of information appliances is driving the demand and
acceptance of common touchscreens for portable and functional electronics.
Touchscreens are found in the medical field and in heavy industry, as well as
for automated teller machines (ATMs), and kiosks such as museum displays or
room automation, where keyboard and mouse systems do not allow a suitably intuitive,
rapid, or accurate interaction by the user with the display's content.
Historically, the touchscreen
sensor and its accompanying controller-based firmware have been made available
by a wide array of after-market system integrators, and not by display, chip,
or motherboard manufacturers. Display manufacturers and chip manufacturers
worldwide have acknowledged the trend toward acceptance of touchscreens as a
highly desirable user interface component and have begun to integrate
touchscreens into the fundamental design of their products.
Source : Wikipedia
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