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A touchscreen (or touch screen) is a type of display that can detect touch input from a user. It consists of both an input device (a touch panel) and an output device (a visual display). The touch panel is typically layered on the top of the electronic visual display of a device. Touchscreens are commonly found in smartphones, tablets, laptops ...
Capacitive sensing. In electrical engineering, capacitive sensing (sometimes capacitance sensing) is a technology, based on capacitive coupling, that can detect and measure anything that is conductive or has a dielectric constant different from air. Many types of sensors use capacitive sensing, including sensors to detect and measure proximity ...
Touch switch. A touch switch is a type of switch that only has to be touched by an object to operate. It is used in many lamps and wall switches that have a metal exterior as well as on public computer terminals. A touchscreen includes an array of touch switches on a display. A touch switch is the simplest kind of tactile sensor.
Perceptive Pixel wasn't kidding around when it launched the planet's biggest projected capacitive display here at SIGGRAPH -- all 82 inches of it were here on display, and naturally, we stopped by ...
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).
Projected capacitance is used to allow interactivity through any non-metallic surface and involves the relationship between a conductive pad and a third object. In touch screen applications, the third object can be a human finger. Capacitance forms between the user's fingers and the wires in the conductive pad.
A tangible user interface (TUI) is a user interface in which a person interacts with digital information through the physical environment. The initial name was Graspable User Interface, which is no longer used. The purpose of TUI development is to empower collaboration, learning, and design by giving physical forms to digital information, thus ...
The left image (above) shows the diagonal wiring arrangement of a 32 I/O projected capacitance touchscreen, manufactured using 10 micron diameter wire. The video shows the same touchscreen in action. There are no LEDs or diodes and, at any one time, only one I/O line is set as an output, the remaining I/O lines being set as high-impedance ...