TOPIC: -
Touch screen monitors are a device by which we give inputs and take outputs as information without using any other external device. Instead of using a keyboard or mouse.
A touch screen is a display which can detect the presence and location of a touch within the display area. The term generally refers to touch or contact to the display of the device by a finger or hand. Touch screens can also sense other passive objects, such as a stylus.
The touch screen has two main qualities. First, it allows you to interact with what is displayed directly on the screen, where it is displayed, rather than indirectly with a mouse (computing) or touchpad. Secondly, it lets one do so without requiring any intermediate device, again, such as a stylus that needs to be held in the hand.
Touch screen monitors are used in a variety of different applications including POS (point of sale) cash registers, PDA's (personal digital assistants), ATM's, car navigation screens, cell phones, gaming consoles and any other type of appliance that requires you to input and receive information.
Types of technology available in Touch Screen. The commonly used are underneath: -
Resistive Touch monitors
A resistive touch screen monitor usually has a coat of very thin electrically conductive and resistive layer of metal. When pressed, the change in electrical current can be measured and the input processed by a computer. While very affordable they only offer about 75% clarity, they can also be easily damaged by objects that are sharp. Resistive touch screen monitors are the most popular types of touch screen monitors used today. They are usually not effected by dust or liquids which make them very reliable.
Surface Wave Touch Screen Monitors
Surface wave touch screen monitors use ultrasonic waves to process inputs from the screen. Ultrasonic waves flow over the touch screen, when a person touches the pad at a specific location, the wave is absorbed and immediately processed by the computer. While not as common as resistive touch panels, they are used in certain applications. Dust and water can contaminate a surface wave touch screen so it is important to keep the screens properly maintained.
Capacitive Touch Screen Monitors
Capacitive touch screens are coated with indium tin oxide. This material provides a continuous current across the screen. The current is precisely controlled throughout the touch pad and can be measured by the computer processor, when touched; the screen is able to send the processor specific coordinates to input information correctly. It is important to note that specific objects can only be used on capacitive touch screens. You can not use a stylus or a pencil for instance; usually you will need a bare finger. Capacitive touch screens have high clarity and are not affected by dust or liquids.
Infrared Touch Screen Monitors
There are two types of Infrared touch screen monitor screens, the first reacts to infrared or thermal waves (heat), unfortunately this technology is slow and does not work well with cold hands or objects. The second type of Infrared touch screen monitors use vertical and horizontal infrared sensors around the perimeter of the touch screen. Creating a grid, the touch screen is able to pinpoint the exact location of where the screen has been touched and send that information to the computer for processing. Infrared touch screen monitors are very durable and are used for industrial and military applications.
There are many different types of touch screen technology available. The most common types include: Resistive, Surface Wave, Capacitive and Infrared.
- Related Videos
- Related Articles
- Ask / Related Q&A
Notebook battery
By: yokio | 03/01/2010Notebook battery is a more important component, its state is directly related to a laptop environment in the absence of power in the ability to work. The batteries in notebook computers is also a serious consumption of parts, so related to notebook computer batteries for the maintenance and rational use issues are also frequently discussed topic.
Deals on 50 plasma 1080p tv-what to consider
By: PJ Raskin | 02/01/2010So you have decided on a 50" Plasma HDTV with 1080p technology. Where can you get the best deal?
Definition of IP (International Protection)
By: Jerry Song | 02/01/2010IP (INTERNATIONAL PROTECTION) are defined by the IEC (INTERNATIONAL ELECTROTECHNICAL COMMISSION). It's for grading the lamp in accordance with its dust / object protection level (protect from intrusion of objects) and waterproof level (protect from water and moisture). The objects referred here include: tools, fingers and so on.
Home Movie Night. Enjoy With Flipshare TV
By: Jeremy Herbert | 02/01/2010See all your Flip content on the big screen with FlipShare TV. It's the easiest way to watch all your favourite videos from the comfort of your living room
Reasons of Why You Must Have Sennheiser
By: M. Christian | 02/01/2010Sennheiser is a well-established manufacturer in the world. They have been inventing excellent quality headphones that are suitable for various purposes, including personal and professional usage. If you are looking for audio products, you can definitely count on this fabulous brand. Here are some reasons of why you can count on Sennheiser compared to other products available in the market.
Get More Pleasures With Skullcandy
By: M. Christian | 02/01/2010People have been trying to get the best MP3 player so that they can get the best listening experience. They can spend extra dollars to make sure that their player will generate a great music reproduction. However, you need to know that in order to get the best listening experience, it does not depend on the player only, but also on the headset that you use.
Understand How to Operate Wireless Headphones
By: M. Christian | 02/01/2010These days, we can easily find wireless devices in the electronic stores, including the wireless headphones. This technology will really help us to enjoy our favorite music without being held in one certain spot. With these wireless headphones, we can still move around the room freely because the headsets are not attached to any cord. Do you know how this wireless technology works?
How to Get the Best Headphones With the Noise Canceling Features
By: M. Christian | 02/01/2010Noise canceling will mean that you can enjoy your listening through the headphones without any noise disturbance from the outside. However, many people understand that the only way of having this headphone is by increasing the volume so that you can hardly listen to the outside noise.
Rf Connectors
By: Ravindra Shrivastava | 03/10/2008 | ElectronicsAn RF connector is an electrical connector designed to work at radio frequencies in the multi-megahertz range. RF connectors are typically used with coaxial cables and are designed to maintain the shielding that the coaxial design offers. Better models also minimize the change in transmission line impedance at the connection.
Leds
By: Ravindra Shrivastava | 01/10/2008 | ElectronicsLED was discovered accidentally in the early last century (1907). In early development stage, carborundum crystals were used as light-emitting active material. Nick Holonyak Jr. of the General Electric Company has developed the first practical visible-spectrum LED in 1962.
Eeprom (electrically Erasable Programmable Read-only Memory)
By: Ravindra Shrivastava | 30/09/2008 | ElectronicsEEPROM stands for Electrically Erasable Programmable Read-Only Memory. EEPROM is a type of non volatile memory which is used in computers or electronic devices to maintain the data when power is turned off but in case SRAM or DRAM information may be lost when power is switched off. To store the larger amount of data, a special type of EEPROM is used known as flash memory which is more economical in comparison to EEPROM devices.
Video Display Controller
By: Ravindra Shrivastava | 26/09/2008 | ElectronicsA Video Display Controller or VDC is an integrated circuit which is the main component in a video signal generator, a device responsible for the production of a TV video signal in a computing or game system. Some VDCs also generate a sound signal, but in that case it's not their main function.
Types of Switched Capacitor Voltage Converters
By: Ravindra Shrivastava | 26/09/2008 | ElectronicsIn the above circuit capacitor C1 is charged to the input voltage during first half of switching cycle. In the second half of switching cycle its voltage is inverted and applied to capacitor C2 and load. The output voltage is negative of the input voltage. The Duty cycle – defined as ratio of charging time of capacitor C1 to the entire switching cycle time – is usually 50% because that generally yields the optimal charge transfer efficiency.
Smart Card
By: Ravindra Shrivastava | 25/09/2008 | ElectronicsA Smart Card or Integrated Circuit Card (ICC) is very small as any pocket-sized card with embedded integrated circuits which can process data. It can receive input which is processed by way of the Integrated Circuit Card applications and delivered as an output.
Rohs and Its Importance
By: Ravindra Shrivastava | 24/09/2008 | ElectronicsRoHS stands for “restriction of hazardous substance“. The term was coined by European Union (EU) in the year 1998 after it noticed alarmingly large quantities of hazardous waste being dumped into landfill sites. The volumes of these wastes were likely to increase 3-5 times faster than the average municipal waste. This indicated a very fast growing source of environmental contamination. RoHs is often referred to as the “lead-free” legislation, but it restricts the use of the following six substan