Have you ever considered of touch screen monitors when you touch
Posted in the Weird Forum
Since: Jul 13
#1 Jul 16, 2013
With the development of science and technology, touch screen has been widely used in our daily life, but do you know the how can the multi touch screen monitors know where you touching, here, I would like to share some information with you
The resistive system consists of a normal glass panel that is covered with a conductive and a resistive metallic layer. These two layers are held apart by spacers, and a scratch-resistant layer is placed on top of the whole setup. An electrical current runs through the two layers while the monitor is operational. When a user touches the [url=http://www.multi-touching .com/]multi touch[/url] screen, the two layers make contact in that exact spot. The change in the electrical field is noted and the coordinates of the point of contact are calculated by the computer. Once the coordinates are known, a special driver translates the touch into something that the operating system can understand, much as a computer mouse driver translates a mouse's movements into a click or a drag.
In the capacitive system, a layer that stores electrical charge is placed on the glass panel of the monitor. When a user touches the multi touch monitor with his or her finger, some of the charge is transferred to the user, so the charge on the capacitive layer decreases. This decrease is measured in circuits located at each corner of the monitor. The computer calculates, from the relative differences in charge at each corner, exactly where the touch event took place and then relays that information to the touch-screen driver software. One advantage that the capacitive system has over the resistive system is that it transmits almost 90 percent of the light from the monitor, whereas the resistive system only transmits about 75 percent. This gives the capacitive system a much clearer picture than the resistive system.
On the monitor of a surface acoustic wave system, two transducers (one receiving and one sending) are placed along the x and y axes of the monitor's glass plate. Also placed on the glass are reflectors -- they reflect an electrical signal sent from one transducer to the other. The receiving transducer is able to tell if the wave has been disturbed by a [url=hhttp://www.multi-touchin g.com/touchscreen/]touch screen[/url] event at any instant, and can locate it accordingly. The wave setup has no metallic layers on the screen, allowing for 100-percent light throughput and perfect image clarity. This makes the surface acoustic wave system best for displaying detailed graphics (both other systems have significant degradation in clarity).
Now, after what I have shared, are you familiar with the operation of the multi touch screen, if you show an interest in it, I think we may have a further communication.
Since: Jan 08
#2 Jul 16, 2013
mouse works fine don't have to lift my arm
and key board goes with me
“I know where you are,”
Since: Jun 08
Right here under my thumb
#3 Jul 16, 2013
"Have you ever considered of touch screen monitors when you touch"
Since: Dec 10
#4 Jul 16, 2013
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