How does touchscreen work?

Answer 1

There are two main technologies for touch screens these days: resistive and capacitive. Resistive touch screens work by pressing a sheet of plastic against a conductive material underneath and recording the position at which this occurred. Capacitive touch screens work by having a layer that stores electrical charge on top of a sheet of glass, and recording when some of the energy from the glass is transferred to the user.

Touch Screens work by having a thin overlay on top of the actual display. This overlay is a sensitive layer which transmits an electrical signal. The computing components then use this data to identify where the user has touched on the screen.

Answer 2

Touch screens can use many different methods for determining where on the screen it is being touched. The most common method, usually found on low-end touch screens, is a thin layer of plastic that contains miniature sensors that respond to an object touching it like a stylus or finger. The more advanced touch screens could use infrared transmitters and detectors to determine screen coordinates. In the case of the iPhone and iPod Touch, as well as other multi-touch devices, there is what's called a capacitance touch screen. These touch screens detect the minute electrical impulses produced by your body, and a combination of hardware and software translates the positioning of your fingers to control the application. In these types of touch screens, your finger must be used to control the device.

Answer 3

There are many different types of touchscreens. Some use squint cameras mounted at the sides of the screen. Other use interrupted laser beams that criss-cross the screen. Some use the interruption of sound waves moving along the surface. Many use changes in the resistance the screen when a finger presses down a sandwich of slightly conductive screen layers. Another common technology measures the capacitive coupling of the finger to a grid of wires.

Answer 4

When you touch the icon on the screen a grid under the screen caculates where you touched and what program is there.

Answer 5

allows u to touch portable devices such as a computer

Answer 6

capacitive sensing is a technology based on capacitive coupling which takes human body capacitance as input

Answer 7

They either come with a pen that you can use as a pointer, or just touch the item on screen that you may want to use to gain access.

Answer 8

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