The touch screen monitor has been around almost as long as computers themselves. Invented in 1971 by Dr Samuel Hurst they have found a use in a wide variety of applications.
The main advantage of a touch screen monitor is that it both acts as an input and output device. A single touch screen monitor can replace an existing CRT (cathode ray tube), plasma or LCD monitor and replace the keyboard and mouse too.
Monitor Touch Screen
Touch screen monitors work by a variety of different methods but the basic function of using a graphical user interface (GUI) that is sensitive to touch is fundamental to all approaches.
Recognising a person's touch is done by several methods, the most common being resistive, capacitive, infrared and acoustic wave.
Different methods are used for the different functions that a touch screen may be required to fulfill. For instance, resistive touch screens work by using conductive and a resistive metallic layers between a sheet of normal glass. An electrical current runs through the two layers and when a user touches the screen, interference in the electrical field is caused and the computer then calculates the coordinates.
Resistive touch screens are quite durable although they can be scratched which can reduce their efficiency but overall they are the most versatile system.
While surface acoustic wave technology used in some touch screens uses ultrasonic waves that pass over the panel. When the panel is touched, a portion of the wave is absorbed and this can be measured identifying the location of the touch. Unfortunately surface wave panels are easily damaged and contaminants on the surface will hinder its function but they offer a higher clarity than the resistive system making them better suited to laboratory work.
Capacitive touch screens that use an electrical charge that is soaked up when a user touches it rather than being resisted like a resistive system makes them more durable. Capacitive touch screens are therefore a mainstay of industrial computers because of their durability and their imperviousness to moisture, dirt and grease. Other touch screen technology including infra-red or strain gauge are used too but are less common.
Touch screens are a viable alternative to the standard monitor, mouse and keyboard assembly adding better durability and resistance to contaminants whilst also forgoing the need for wires and peripherals making them ideal for industrial or manufacturing purposes.
Click for larger image and other views
Viewsonic VX2258WM 22-Inch (21.5-Inch Vis) Multi-Touch Full HD Monitor with 1920x1080 Resolution - Black Feature
- 22" (21.5" Vis) Multi-touch LCD monitor with 1920x1080 Full HD resolution
- DVI, VGA inputs
- 100,000:1 Dynamic Contrast Ratio
- Stereo speakers with SRS Premium Sound? VESA mountable design
- 4:3/widescreen auto aspect ratio adjustment
Viewsonic VX2258WM 22-Inch (21.5-Inch Vis) Multi-Touch Full HD Monitor with 1920x1080 Resolution - Black Overview
ViewSonic's VX2258WM is 22" (21.5" Vis) Multi-touch Full HD monitor with 1920x1080 resolution, integrated speakers, DVI and VGA inputs, tilt/swivel functions and VESA mountable design.100,000:1 Dynamic contrast ratio for crystal crisp images, SRS Premium Sound for crystal crisp sound and Eco mode for up to 30% energy saving come standard in the new 22" (21.5" Vis) offering from Viewsonic. Perfect for both commercial and consumer applications, certified with Windows 7, VX2258wm is a one-stop solution for your multi-touch monitor needs. You will also get the most out of your investment with ViewSonic's strongest pixel performance guarantee and 3-year warranty! VX2258wm is also Energy Star 5.0 and EPEAT Silver certified.SAVE NOW on the special offers below!
Available In Stock. |
| This Viewsonic VX2258WM 22-Inch (21.5-Inch Vis) Multi-Touch Full HD Monitor with 1920x1080 Resolution - Black ships for FREE with Super Saver Shipping. |
Price : Click to Check Update Prices Please. |
