1. TOUCH SCREEN TECHNOLOGY
Seminar Presentation On
TOUCH SCREEN TECHNOLOGY
Under the guidance of
Mrs.Apeksha Walde
Submitted by
Juned shaikh
Salahuddin shaikh
Department of Computer Engineering
Jmct’s polytechnic College of Engineering, Nasik

2. Table of contents * Introduction * How does a touch screen works?
* Types of touch screen
* Comparison of types of touch screen
* System requirements
* Touch screen strengths
* Applications
* Touch screen with some other devices
* Conclusion
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3. Introduction Definition:-
“ A computer display screen ,sensitive to human touch,
allowing user to interact with computer by touching on screen” .
* works instantly with all programs like mouse .
* touch event is registered when finger touches screen .
* components making a complete touch system :-
1. A touch sensor .
2. A controller .
3. A s/w driver .
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4. How does a touch screen works ?
1. A touch sensor -
* a glass panel with touch responsive surface .
* covers whole viewable area .
* touching the screen causes voltage change ,
input for controller .
2. A controller -
* interface between sensor & PC .
* converts voltage change into digital signal .
* type of interface required
3. A s/w driver -
* touch screen & PC works together .
* converts touch events into mouse events .
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5. Types of touch screens 3 major types- 1. Resistive touch screens
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6. 2. Capacitive touch screens
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7. 3. Surface acoustic wave
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8. Comparison of different touch screens Properties Capacitive Resistive
SAW
Clarity
Excellent
Good
Durability
Accuracy
Very high
High
Touch resolution
Response time
8-12 ms
5-10ms
10-15ms
Stylus
Conductive
Hard/soft
Soft
Problem
Conductive object contact
Scratches easily
Dead zones
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9. O . S . : Ms Dos version 5.0+windows 3.0,
System requirements
O . S : Ms Dos version 5.0+windows 3.0,
windows ME/2000/XP/7/Linux
Processor: 386 PC compatible or higher
Disk : 2MB of free space hard disk , 3.5”(1.44MB)
floppy drive
Memory : 14kb resident memory
K/B : Not required after installation
Video : ½ MB SVGA or higher
Ports : RS 232, mouse port or USB(depends on type)
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10. Touch screen strengths
Convenience of push button control
Easy enough for a child to use
All output and inputs are done through one device
3-5 times faster than a speeding mouse
No dragging mouse to each starting point
More intuitive than other input devices Lasts (2-5 times)
longer than a mouse.
Low maintenance.
No training needed (push button control)
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11. Applications * Education . * Public access area . * Industry .
* Business .
* Customer self service .
* Advanced applications .
- All in one PC .
- Protouch .
- Touch phone .
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12. Touch screen with some other device
* Interactive surface using ED projectors
- ED projector for GUI on any surface .
- creates touch screen everywhere .
- bring form virtual world to real world .
- 3 main components
. LCD projector .
. computer controlled rotating mirror .
. a zoom camera .
- application
. desktop screen in office .
. phone directory on wall near phone .
. games
! creating ‘Hopscotch’ screen .
! ‘Fro….og’ game .
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13. * Photo browser with touch screen
- device recognize presence of people & objects.
- used in ambient room .
- memory browser for future .
- touch screen display has 3 areas
. central area for enlarging .
. right side area show icon .
. left side contains roll .
* Dialogue architecture for robots
- works only on preprogrammed & limited inst .
- for more demands .
- command using touch gestures & speech .
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14. Conclusion * main goal . * facilities . * becoming very popular .
* people demanding it .
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15. Bibliography
[1] Claudio Pinhanez ,“Creating Ubiquitous Interactive Games Using Everywhere Display Projectors”
[2] E .A .W .H Van den Hoven , J .H .Eggen , “A Graspable User Interface For An Ambient Intelligent Photo Browser”
[3] Carl Burke , Lisa Harper , Dan Loher , “A Dialog Architecture Of Multimodal Control Of Robots”
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16. Thank you
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