21-02-2011, 02:35 PM
[attachment=8895]
Touch Screen and Future Interfacing Devices
Abstract
In the 21st century , when technology is at par with what sometime back was called as
Science fiction , there is extensive acceptance of innovative , newer , smaller and user
friendly interfacing Devices. The most common of the recent 20th century are the Touch Screens.
Touch screen is the Interfacing Device of the New Age. It is an Input as Well as Output device. It is a 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.
As Touch screen’s are very intuitive , they are now commonly used in Smart Phones ,
LCD attachments , ATM machines , Camera , Industrial Machine Use , Hospital
Machines, Single-touch buttons are found in everything around the home, office, or
anywhere in between: cell phones, landline phones,remote controls, televisions,
computers and all of its peripherals, gaming systems, refrigerators, ovens, toasters, car
interior controls like radio and air conditioning, and so on and the best part is any LCD
screen can be converted into a Touch screen for convenience.
Touch screen and future interfacing devices would be discussed further.
What is Touch screen?
A touchscreen is an electronic visual display that can detect the presence and location of a touch within the display area. The term generally refers to touching the display of the device with a finger or hand.
Why Touch Screens?
The touch screen has two main characteristics; it facilitates one to interact with what is
displayed straightforwardly on the screen, rather than indirectly with a mouse or touchpad and it lets one perform the touch operations without necessitating any middle device.
Such touch screen displays can be connected to computers, laptops, PDAs, cell phones
etc. They also project an important function in the blueprint of digital.
Touch screen monitors are a way to both input information and receive information from
a single peripheral device (usually a monitor screen). Instead of using a keyboard or mouse, you can easily input data directly into the touch screen where you are also able to receive information
2.1 Types of Touch Technology[6,9]
Touch-screen technology falls into categories: resistive, capacitive and surface wave.
Each technology has strengths suited for specific applications.
Resistive
A resistive touch screen display is composed of a standard glass sheet that is coated with a thin conductive and a resistive metallic sheet. These two levels are kept separated by
spacers (objects positioned between two or more sheets of glass in order to retain a
uniform width between the glasses and avoid sealant deformation). A scratch-resistant
coating is positioned above the entire arrangement. An electrical current travels between the two layers while the monitor is being used. When a user makes contact with the display, the two layers touch each other contact in same location. The modification in the electrical current is identified and the coordinates of the touch are computed by the computer. An exceptional driver program then transforms the touch into a language which the computer can comprehend.
Being quite reasonably priced they only offer about 75 percent 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. [ 8 ]
Surface wave touch screen monitors use ultrasonic waves to process inputs from the
screen. A surface wave touch screen display is composed of two transducers (acting as
receivers and senders) positioned along the X and Y axis of the display’s glass layer.
Reflectors are placed on the glass layer which reflects an electrical signal propelled from one transducer to the other. The receiving transducer is capable to identify if the signal has been altered by a touch at any moment, and can trace it consequently. 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. The wave arrangement has no metallic coatings on the display, permitting for 100 percent light throughput and ideal picture clearness. This formulates the surface wave touch screen display as finest for exhibiting detailed pictures.
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.
Touch Screen and Future Interfacing Devices
Abstract
In the 21st century , when technology is at par with what sometime back was called as
Science fiction , there is extensive acceptance of innovative , newer , smaller and user
friendly interfacing Devices. The most common of the recent 20th century are the Touch Screens.
Touch screen is the Interfacing Device of the New Age. It is an Input as Well as Output device. It is a 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.
As Touch screen’s are very intuitive , they are now commonly used in Smart Phones ,
LCD attachments , ATM machines , Camera , Industrial Machine Use , Hospital
Machines, Single-touch buttons are found in everything around the home, office, or
anywhere in between: cell phones, landline phones,remote controls, televisions,
computers and all of its peripherals, gaming systems, refrigerators, ovens, toasters, car
interior controls like radio and air conditioning, and so on and the best part is any LCD
screen can be converted into a Touch screen for convenience.
Touch screen and future interfacing devices would be discussed further.
What is Touch screen?
A touchscreen is an electronic visual display that can detect the presence and location of a touch within the display area. The term generally refers to touching the display of the device with a finger or hand.
Why Touch Screens?
The touch screen has two main characteristics; it facilitates one to interact with what is
displayed straightforwardly on the screen, rather than indirectly with a mouse or touchpad and it lets one perform the touch operations without necessitating any middle device.
Such touch screen displays can be connected to computers, laptops, PDAs, cell phones
etc. They also project an important function in the blueprint of digital.
Touch screen monitors are a way to both input information and receive information from
a single peripheral device (usually a monitor screen). Instead of using a keyboard or mouse, you can easily input data directly into the touch screen where you are also able to receive information
2.1 Types of Touch Technology[6,9]
Touch-screen technology falls into categories: resistive, capacitive and surface wave.
Each technology has strengths suited for specific applications.
Resistive
A resistive touch screen display is composed of a standard glass sheet that is coated with a thin conductive and a resistive metallic sheet. These two levels are kept separated by
spacers (objects positioned between two or more sheets of glass in order to retain a
uniform width between the glasses and avoid sealant deformation). A scratch-resistant
coating is positioned above the entire arrangement. An electrical current travels between the two layers while the monitor is being used. When a user makes contact with the display, the two layers touch each other contact in same location. The modification in the electrical current is identified and the coordinates of the touch are computed by the computer. An exceptional driver program then transforms the touch into a language which the computer can comprehend.
Being quite reasonably priced they only offer about 75 percent 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. [ 8 ]
Surface wave touch screen monitors use ultrasonic waves to process inputs from the
screen. A surface wave touch screen display is composed of two transducers (acting as
receivers and senders) positioned along the X and Y axis of the display’s glass layer.
Reflectors are placed on the glass layer which reflects an electrical signal propelled from one transducer to the other. The receiving transducer is capable to identify if the signal has been altered by a touch at any moment, and can trace it consequently. 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. The wave arrangement has no metallic coatings on the display, permitting for 100 percent light throughput and ideal picture clearness. This formulates the surface wave touch screen display as finest for exhibiting detailed pictures.
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.
