Touch Screen Touch Screen TechnologyTechnology

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ROBIN GARGROBIN GARG

6CS726CS72

IntroductionIntroduction

The touch screen is one of the easiest to The touch screen is one of the easiest to use PC interfaces, making it the interface use PC interfaces, making it the interface of choice for a wide variety of applications. of choice for a wide variety of applications. A touch interface allows users to navigate A touch interface allows users to navigate a computer system by touching icons or a computer system by touching icons or links on the screen. links on the screen.

Introduction (contd.)Introduction (contd.)

A touch screen is an input device that allows A touch screen is an input device that allows users to operate a PC by simply touching the users to operate a PC by simply touching the display screen. Touch input is suitable for a wide display screen. Touch input is suitable for a wide variety of computing applications. A touch variety of computing applications. A touch screen can be used with most PC systems as screen can be used with most PC systems as easily as other input devices such as track balls easily as other input devices such as track balls or touch pads. or touch pads.

What Are Touchscreens Used What Are Touchscreens Used For?For?

• POINT OF SALES SYSTEMPOINT OF SALES SYSTEM

• PUBLIC INFORMATION DISPLAYPUBLIC INFORMATION DISPLAY

• INDUSTRIAL CONTROL SYSTEMS  INDUSTRIAL CONTROL SYSTEMS  

A Touch ScreenA Touch Screen

1. Touch Sensor1. Touch Sensor

A touch screen sensor is a clear glass panel with a touch A touch screen sensor is a clear glass panel with a touch responsive surface.responsive surface.

The touch sensor/panel is placed over a display screen so that The touch sensor/panel is placed over a display screen so that the responsive area of the panel covers the viewable area of the responsive area of the panel covers the viewable area of the video screen. the video screen.

The sensor generally has an electrical current or signal going The sensor generally has an electrical current or signal going through it and touching the screen causes a voltage or signal through it and touching the screen causes a voltage or signal change. change.

This voltage change is used to determine the location of the This voltage change is used to determine the location of the touch to the screen. touch to the screen.

2. Controller2. Controller

The controller is a small PC card that connects between the The controller is a small PC card that connects between the touch sensor and the PC.touch sensor and the PC.

It takes information from the touch sensor and translates it into It takes information from the touch sensor and translates it into information that PC can understand.information that PC can understand.

The controller is usually installed inside the monitor for The controller is usually installed inside the monitor for integrated monitors or it is housed in a plastic case for external integrated monitors or it is housed in a plastic case for external touch add-ons/overlays.touch add-ons/overlays.

Integrated touch monitors will have an extra cable connection Integrated touch monitors will have an extra cable connection on the back for the touch screen. Controllers are available that on the back for the touch screen. Controllers are available that can connect to a Serial/COM port (PC) or to a USB port (PC or can connect to a Serial/COM port (PC) or to a USB port (PC or Macintosh). Macintosh).

3. Software Driver3. Software Driver

The driver is a software update for the PC system that allows the The driver is a software update for the PC system that allows the touch screen and computer to work together. touch screen and computer to work together.

It tells the computer's operating system how to interpret the touch It tells the computer's operating system how to interpret the touch event information that is sent from the controller.event information that is sent from the controller.

Most touch screen drivers today are a mouse-emulation type driver. Most touch screen drivers today are a mouse-emulation type driver. This makes touching the screen the same as clicking your mouse at This makes touching the screen the same as clicking your mouse at the same location on the screen. the same location on the screen.

This allows the touch screen to work with existing software and This allows the touch screen to work with existing software and allows new applications to be developed without the need for touch allows new applications to be developed without the need for touch screen specific programming. screen specific programming.

5-Wire Resistive Touch screens5-Wire Resistive Touch screens

• We offer 5-Wire Resistive touch screen technology We offer 5-Wire Resistive touch screen technology with the CRT and LCD touch monitors.with the CRT and LCD touch monitors.

• It is a durable and accurate technology that is It is a durable and accurate technology that is widely used in point-of-sale systems, industrial widely used in point-of-sale systems, industrial controls, and medical systems. controls, and medical systems.

• It is pressure sensitive so it responds to any input It is pressure sensitive so it responds to any input device, including finger, gloved hand, or pen stylus. device, including finger, gloved hand, or pen stylus.

Capacitive Touch screensCapacitive Touch screens

We offer Capacitive touch screen technology with We offer Capacitive touch screen technology with the CRT and LCD touch monitors.the CRT and LCD touch monitors.

It is a durable technology that is used in point-of-It is a durable technology that is used in point-of-sale systems, industrial controls, and public sale systems, industrial controls, and public information kiosks.information kiosks.

It has a higher clarity than Resistive technology, but It has a higher clarity than Resistive technology, but it only responds to finger contact and will not work it only responds to finger contact and will not work with a gloved hand or pen stylus. with a gloved hand or pen stylus.

Pen Touch Capacitive Touch Pen Touch Capacitive Touch screensscreens

We offer Pen Touch Capacitive touch screen We offer Pen Touch Capacitive touch screen technology with the CRT and LCD touch technology with the CRT and LCD touch monitors.monitors.

This screen combines durable Capacitive This screen combines durable Capacitive technology with a tethered pen stylus.technology with a tethered pen stylus.

The screen can be set to respond to finger input The screen can be set to respond to finger input only, pen input only, or both.only, pen input only, or both.

Infrared Touch screensInfrared Touch screens

• We offer Infrared touch screen technology with the We offer Infrared touch screen technology with the Plasma display solutions .Plasma display solutions .

• This is the only type of touch technology that we have This is the only type of touch technology that we have available for large displays such as 42-inch Plasma available for large displays such as 42-inch Plasma screens.screens.

• It is a durable technology that offers high image It is a durable technology that offers high image

clarity. Responds to any input device or stylus.clarity. Responds to any input device or stylus.

Touchscreen SnapshotTouchscreen Snapshot

Public Information DisplaysPublic Information Displays

Information kiosks, tourism displays, trade show Information kiosks, tourism displays, trade show displays, and other electronic displays are used displays, and other electronic displays are used by many people that have little or no computing by many people that have little or no computing experience. The user-friendly touch screen experience. The user-friendly touch screen interface can be less intimidating and easier to interface can be less intimidating and easier to use than other input devices, especially for use than other input devices, especially for novice users. A touchscreen can help make your novice users. A touchscreen can help make your information more easily accessible by allowing information more easily accessible by allowing users to navigate your presentation by simply users to navigate your presentation by simply touching the display screen. touching the display screen.

Retail and Restaurant SystemsRetail and Restaurant Systems

Time is money, especially in a fast paced retail Time is money, especially in a fast paced retail or restaurant environment. Touchscreen or restaurant environment. Touchscreen systems are easy to use so employees can get systems are easy to use so employees can get work done faster, and training time can be work done faster, and training time can be reduced for new employees. And because input reduced for new employees. And because input is done right on the screen, valuable counter is done right on the screen, valuable counter space can be saved. Touchscreens can be used space can be saved. Touchscreens can be used in cash registers, order entry stations, seating in cash registers, order entry stations, seating and reservation systems, and more. and reservation systems, and more.

Other uses of Touchscreen Other uses of Touchscreen

Customer Self-ServiceCustomer Self-Service

Control and Automation SystemsControl and Automation Systems

Computer Based TrainingComputer Based Training

Assistive TechnologyAssistive Technology

Thank You!Thank You!