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TOUCH SCREEN TECHNOLOGY Presentation Transcript
1.TOUCH SCREEN TECHNOLOGY
2.OVERVIEW
Introduction
History
Components
Technologies
Advantages & Disadvantages
Applications
Conclusion
Introduction
History
Components
Technologies
Advantages & Disadvantages
Applications
Conclusion
3.INTRODUCTION
A touch screen is an electronic visual display that can detect the presence and location of a touch within the display area.
Touch screen can also sense other passive objects such as stylus.
A touch screen is an electronic visual display that can detect the presence and location of a touch within the display area.
Touch screen can also sense other passive objects such as stylus.
4.HISTORY
The first touch screen was developed by E.A.Jhonson.
In 1971, a ‘touch sensor ’ was developed by
Dr. Sam Hurst. This sensor was called elograph.
The first touch screen was developed by E.A.Jhonson.
In 1971, a ‘touch sensor ’ was developed by
Dr. Sam Hurst. This sensor was called elograph.
5.Touch screen first gained some visibility with the invention of computer- assisted learning, which came out in 1975 as part of PLATO project.
In 1983, the first touch screen computer , the HP-150 reached the market.
In 1983, the first touch screen computer , the HP-150 reached the market.
6.Components
A basic touch screen has three main components:
Touch sensor
Controller
Software Driver
A basic touch screen has three main components:
Touch sensor
Controller
Software Driver
7.Touch Sensor
A touch sensor is a clear glass panel with a touch responsive area.
The touch sensor is placed over a display screen so that the responsive area of the panel covers the viewable area of screen.
A touch sensor is a clear glass panel with a touch responsive area.
The touch sensor is placed over a display screen so that the responsive area of the panel covers the viewable area of screen.
8.Controller
The controller connects between touch sensor and the PC.
Take information from touch sensor and translate it into information that PC understands.
The controller connects between touch sensor and the PC.
Take information from touch sensor and translate it into information that PC understands.
9.Software Driver
The driver allow the touch screen and computer to work together.
This makes touching the screen as same as clicking your mouse at the same location.
The driver allow the touch screen and computer to work together.
This makes touching the screen as same as clicking your mouse at the same location.
10.Technologies
Resistive
Surface acoustic wave
Capacitive
Infrared
Resistive
Surface acoustic wave
Capacitive
Infrared
11.Resistive
Composed of several layers.
Durable and resistant to humidity and liquid spills.
Offer limited clarity and easily damaged by sharp objects.
Composed of several layers.
Durable and resistant to humidity and liquid spills.
Offer limited clarity and easily damaged by sharp objects.
12.Surface Acoustic Wave
Uses ultrasonic waves.
Surface wave touch screen panels can be damaged by outside elements.
When the panel is touched, a portion of wave is absorbed.
Uses ultrasonic waves.
Surface wave touch screen panels can be damaged by outside elements.
When the panel is touched, a portion of wave is absorbed.
13.Capacitive
Consist of an insulator such as glass.
Coated with transparent conductor such as ITO (indium tin oxide).
Used where clarity precision is of concern.
Consist of an insulator such as glass.
Coated with transparent conductor such as ITO (indium tin oxide).
Used where clarity precision is of concern.
14.Infrared
Based on Light Beam Interruption technology.
Used for large displays, banking machines and in military applications.
Based on Light Beam Interruption technology.
Used for large displays, banking machines and in military applications.
15.Advantages
User friendly
Fast response
Error free input
Use finger, fingernail, gloved hands, stylus or any soft tip pointer
Easy to clean
Saves space
Make computing easy, powerful and fun
It benefits children
User friendly
Fast response
Error free input
Use finger, fingernail, gloved hands, stylus or any soft tip pointer
Easy to clean
Saves space
Make computing easy, powerful and fun
It benefits children
16.Disadvantages
Proximity to the screen
Accuracy
Big screen leads to low battery life
Screen has to be really big not to miss things when pressing them with your finger.
Touch screen means screen cant be read too well in direct sunlight as it applies an additional not 100% transparent
fatigue
Proximity to the screen
Accuracy
Big screen leads to low battery life
Screen has to be really big not to miss things when pressing them with your finger.
Touch screen means screen cant be read too well in direct sunlight as it applies an additional not 100% transparent
fatigue
17.Applications
Gaming
Industrial and medical instrumentation
ATM’s and banks
Corporate information
Market research
Library resource guide
Mobile phones and tablets
Gaming
Industrial and medical instrumentation
ATM’s and banks
Corporate information
Market research
Library resource guide
Mobile phones and tablets
18.Conclusion
Designers are trying to use touch screen to simplify input commands.
Today, touch screen has been adopted by computer users of all abilities because it is simple, fast and innovative.
In future there is no usage of mouse and keyboards as they will be replaced by touch screen.
Designers are trying to use touch screen to simplify input commands.
Today, touch screen has been adopted by computer users of all abilities because it is simple, fast and innovative.
In future there is no usage of mouse and keyboards as they will be replaced by touch screen.
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