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The resulting resistive technology touch screen was first shown on the World's Fair at Knoxville in 1982. [20] 1982 MULTI-TOUCH CAMERA - Multi-touch technology began in 1982, when the University of Toronto's Input Research Group developed the first human-input multi-touch system, using a frosted-glass panel with a camera placed behind the glass.
In computing, multi-touch is technology which enables a touchpad or touchscreen to recognize more than one [7] [8] or more than two [9] points of contact with the surface. Apple popularized the term "multi-touch" in 2007 with which it implemented additional functionality, such as pinch to zoom or to activate certain subroutines attached to predefined gestures.
The cathode ray tube was the workhorse of text and video display technology for several decades until being displaced by plasma, liquid crystal , and solid-state devices such as thin-film transistors (TFTs), LEDs and OLEDs.
Resistive touchscreen technology works well with almost any stylus-like object, and can also be operated with gloved fingers and bare fingers alike. In some circumstances, this is more desirable than a capacitive touchscreen, which needs a capacitive pointer, such as a bare finger (though some capacitive sensors can detect gloves and some gloves can work with all capacitive screens).
It employs a transparent conductive oxide as a heater that can quickly change the pixels. The pixels are 100 times thinner than liquid crystal. Response times are under 1 millisecond. They claim that the metasurface array could replace the liquid crystal layer in today's displays, eliminating the need for production technology. [25]
Touch screen The Newton is a specified standard and series of personal digital assistants (PDAs) developed and marketed by Apple Computer, Inc. from 1993 to 1998. An early device in the PDA category — the term itself originating with the Newton [ 2 ] — it was the first to feature handwriting recognition .
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A touch user interface (TUI) is a computer-pointing technology based upon the sense of touch ().Whereas a graphical user interface (GUI) relies upon the sense of sight, a TUI enables not only the sense of touch to innervate and activate computer-based functions, it also allows the user, particularly those with visual impairments, an added level of interaction based upon tactile or Braille input.