Touch screen monitor is a type of display screen that has a touch-sensitive transparent panel covering the screen. Instead of using a pointing device such as a mouse or light pen, you can use your finger to point directly to objects on the screen.
The benefits of such technology are obvious. Rather than lugging along extra input devices such as a mouse or a keyboard, the user need only his finger to manipulate the chosen device. But it's not just mobile devices that benefit from this type of input. All kinds of devices can be equipped, including TV and computer monitors, LCD screens, and the older CRT computer monitors. As a result, a bartender can press on a screen to ring up drinks on a busy night rather than type in a price, a nurse can input patient information with one hand. Truly, the possibilities with touch screen monitors are endless.
Resistive Touch Screen Monitor
Touch screen monitors usually come in three varieties that enable it to recognize a person's touch. These are resistive, capacitive and surface acoustic wave. The resistive type works by having two panels with a thin space between them. When the user presses the screen, the two panels touch at that point, and the exact coordinates are then registered with the computer.
A capacitive system runs a small electrical charge throughout the touch screen. When the user touches the chosen area, some of the electrical charge is distributed to the finger, lessening the charge at that location. The coordinates are again recorded and sent to the computer. This type of touch screen produces a clearer picture because it transmits more light and doesn't require two panels.
Finally, the surface acoustic wave system is the best, and results in the clearest picture. Transducers are used to send electrical signals across the screen, and if a user touches the screen, they can determine where based on how the electrical signal is received from one transducer to the other.
Since the capacitive system must have a finger to absorb electricity, most non-living objects won't register as a touch. Resistive and surface acoustic wave systems on the other hand react to just about any form of pressure. Each has its different advantages as a result, and manufacturers will only find new ways to make use of them.
Finally, although touch screens provide a natural interface for computer novices, they are unsatisfactory for most applications because the finger is such a relatively large object. It is impossible to point accurately to small areas of the screen. In addition, most users find touch screens tiring to the arms after long use.
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Lilliput 7" Um-70t Usb Power on Touch Screen Monitor Feature
- Screen Resolution: WVGA(800×480),
- Touch Panel?4-wire resistive,
- Contrast:500:1,Brightness:250cd/m²,
- Aspect Ratio: 16:9,Input Power: USB(DC 5V),
- Power Consumption: ?4.5W.
Lilliput 7" Um-70t Usb Power on Touch Screen Monitor Overview
MODEL NUMBER :UM-70TAbstract? 7" USB Touch Screen Monitor, Not DC Power, Just USB Powered, Not VGA Input, Just USB Input .Product Feature:NOT DC power, just USB PoweredNOT VGA input, just USB Input,Slimmer, less weight, 288g only!One cable does it all!Innovation USB-only connection---add monitors without adding clutter!A USB Powered Monitor as Multiple Input/Output Device for Video Conference, Instant Messaging, News, Photo Frame and Stock Casting, etc.How to use it?Installing Monitor Driver (AutoRun);Click on display setting icon on system tray and see the menu;Setup menu for Screen Resolution, Colors, Rotation and Extention, etc.OS:Windows 2000 SP4/XP SP2/Vista 32bit, UM-70 is great for use with a small laptop or netbook because of its light weight and single USB connection, it can travel with your laptop, no power brick needed!General ProductivityOutlook/Mail, Calendar or Address Book applications up all the timeView Widgets for To-do's, Weather, Stock Tickers, Dictionary, Thesaurus, etc.Track System Performance, Monitor Network Traffic, CPU cycles,EntertainmentHave your media player up to control entertainmentQuick access to important toolboxes for online gamingUse it as a secondary display for computers hooked up to TVsRun a 2nd or 3rd display without the need for a new graphics card,SocialSKYPE/Google/MSN Chat while using other full screen applicationsWatch for Friends on Facebook and MySpaceKeep your Twitter Client up all the time but off your main work screen;Screen Resolution: WVGA(800×480),Touch Panel?4-wire resistive,Contrast:500:1,Brightness:250cd/m²,Aspect Ratio: 16:9,Input Power: USB(DC 5V),Power Consumption: ?4.5W,Dimension(LWH):188×123×23.5mm/25.8mm?with touch panel?,Weight:288g/ 405g?with touch panel?,USB Cable 1 PieceDriver Disk 1 PieceTouch Pen 1 Piece Operation Manual 1 PieceSAVE NOW on the special offers below!
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