Touch Screen Technology ppt, Slides of Software Engineering

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Presented by : Bikash Das Rollno-PG18- MSC COMPUTER SCIENCE( RD SEMISTER)

GUIDED BY :

Swarna Mam

 In 1971, the first "touch sensor" was developed by Doctor Sam Hurst (founder of Elographics) while he was an instructor at the University of Kentucky.  (^) In 1974, the first true touch screen incorporating a transparent surface came on the scene developed by Sam Hurst and Elographics. In 1977, Elographics developed and patented five-wire resistive technology, the most popular touch screen technology in use today.

 A touchscreen is an input device that allows users to operate a PC by simply touching the display screen. Touch input is suitable for a wide variety of computing applications. A touchscreen can be used with most PC systems as easily as other input devices such as track balls or touch pads. Browse the links below to learn more about touch input technology and how it can work for you.

Touchscreen systems are being used in a variety of applications, including point- of-sale systems, public information displays, industrial control systems, and more.

 A basic touchscreen has three main components: a touch sensor, a controller, and a software driver. The touchscreen is an input device, so it needs to be combined with a display and a PC or other device to make a complete touch input system.

 A touch screen sensor is a clear glass panel with a touch responsive surface. The touch sensor/panel is placed over a display screen so that the responsive area of the panel covers the viewable area of the video screen. There are several different touch sensor technologies on the market today, each using a different method to detect touch input. The sensor generally has an electrical current or signal going through it and touching the screen causes a voltage or signal change. This voltage change is used to determine the location of the touch to the screen.

 (^) The driver is a software update for the PC system that allows the touchscreen and computer to work together. It tells the computer's operating system how to interpret the touch event information that is sent from the controller. Most touch screen drivers today are a mouse-emulation type driver. This makes touching the screen the same as clicking your mouse at the same location on the screen. This allows the touchscreen to work with existing software and allows new applications to be developed without the need for touchscreen specific programming. Some equipment such as thin client terminals, DVD players, and specialized computer systems either do not use software drivers or they have their own built-in touch screen driver.

 4-Wire Resistive touchscreen technology is used in the touch add-ons that we offer for PC monitors and notebooks. It is a reliable and affordable technology that is widely used by individuals and in less demanding workplace applications. It is pressure sensitive so it responds to any input device, including finger, gloved hand, or pen stylus.

 We offer Capacitive touchscreen technology with the CRT and LCD touch monitors that we offer. It is a durable technology that is used in a wide range of applications including point-of-sale systems, industrial controls, and public information kiosks. It has a higher clarity than Resistive technology, but it only responds to finger contact and will not work with a gloved hand or pen stylus.



We offer PenTouch Capacitive

touchscreen technology with the CRT

and LCD touch monitors that we offer.

This screen combines durable

Capacitive technology with a tethered

pen stylus. The screen can be set to

respond to finger input only, pen input

only, or both. The pen stylus is a good

choice for signature capture, on-

screen annotations, or for applications

requiring precise input. Follow this link

for more information.

 We offer Near Field Imaging touchscreen technology as one of the custom LCD touch monitor solutions that we can provide. It is an extremely durable screen that is suited for use in industrial control systems and other harsh nvironments. The NFI type screen is not affected by most surface contaminants or scratches. Responds to finger or gloved hand. Follow this link for more information.

 We offer Infrared touchscreen technology with the Plasma display solutions that we offer. This is the only type of touch technology that we have available for large displays such as 42- inch Plasma screens. It is a durable technology that offers high image clarity. Responds to any input device or stylus. Follow this link for more information.

 Information kiosks, tourism displays,

trade show displays, and other

electronic displays are used by many

people that have little or no computing

experience. The user-friendly touch

screen interface can be less

intimidating and easier to use than

other input devices, especially for

novice users. A touchscreen can help

make your information more easily

accessible by allowing users to

navigate your presentation by simply

touching the display screen.

Time is money, especially in a fast

paced retail or restaurant environment.

Touchscreen systems are easy to use so

employees can get work done faster,

and training time can be reduced for

new employees. And because input is

done right on the screen, valuable

counter space can be saved.

Touchscreens can be used in cash

registers, order entry stations, seating

and reservation systems, and more.