Ppt on touch screen


Published on

Published in: Technology
  • please send this to komalibetham2528@gmail.com
    Are you sure you want to  Yes  No
    Your message goes here
  • please send this to vt010492@gmail.com
    Are you sure you want to  Yes  No
    Your message goes here
  • send to my mail vamsipabolu7@gmail.com...pleaseee
    Are you sure you want to  Yes  No
    Your message goes here
  • ple send to my mail kothamasu.pavan91@gmail.com ple send this because my seminar is tomorow
    Are you sure you want to  Yes  No
    Your message goes here
  • its very good :) can you mail me this ppt to guru.thecool@gmail.com!! thank you in advance!!
    Are you sure you want to  Yes  No
    Your message goes here
No Downloads
Total views
On SlideShare
From Embeds
Number of Embeds
Embeds 0
No embeds

No notes for slide

Ppt on touch screen

  1. 1. Touch Screen Technology
  2. 2. Group members Alisha Korpal Amandeep Singh Kalsi Kirandeep Kaur
  3. 3. Overview <ul><li>Introduction </li></ul><ul><li>History </li></ul><ul><li>Components </li></ul><ul><li>Technologies </li></ul><ul><li>Pros & cons </li></ul><ul><li>Applications </li></ul><ul><li>Conclusion </li></ul>
  4. 4. Introduction <ul><li>A touch screen is a display that can detect the presence and location of a touch within the display area. </li></ul><ul><li>Touch screen can also sense other passive objects such as stylus. </li></ul>
  5. 5. History <ul><li>Touch screens emerged from academic and corporate research labs </li></ul><ul><li>In 1971, the first &quot;Touch Sensor&quot; was developed by Doctor Sam Hurst (founder of Elographics) while he was an instructor at the University of Kentucky. </li></ul>
  6. 6. Contd… <ul><li>This sensor, called the “Elograph”. </li></ul><ul><li>Touch screens first gained some visibility with the invention of the computer-assisted learning terminal, which came out in 1975 as part of the PLATO project . </li></ul>
  7. 7. Components <ul><li>A basic touch screen has three main components : </li></ul><ul><ul><ul><li>Touch sensor </li></ul></ul></ul><ul><ul><ul><li>Controller </li></ul></ul></ul><ul><ul><ul><li>Software driver </li></ul></ul></ul>
  8. 8. Touch sensor <ul><li>A touch screen sensor is a clear glass panel with a touch responsive area. </li></ul><ul><li>The touch sensor is placed over a display screen so that the responsive area of the panel covers the viewable area of the screen. </li></ul>
  9. 9. Controller <ul><li>The controller connects between the touch sensor and the PC. </li></ul><ul><li>Take information from the touch sensor and translate it into information that PC can understand. </li></ul>
  10. 10. Software Driver <ul><li>The driver allow the touch screen and computer to work together </li></ul><ul><li>This makes touching the screen as same as clicking the your mouse at the same location on the screen. </li></ul>
  11. 11. <ul><li>Resistive </li></ul><ul><li>Surface acoustic wave </li></ul><ul><li>Capacitive </li></ul><ul><li>Infrared </li></ul><ul><li>Optical Imaging </li></ul>Technologies
  12. 12. Resistive <ul><li>composed of several layers </li></ul><ul><li>Two Electrically conductive layers </li></ul>
  13. 13. Surface acoustic wave <ul><li>uses ultrasonic waves </li></ul><ul><li>Surface wave touch screen panels can be damaged by outside elements. </li></ul><ul><li>When the panel is touched, a portion of the wave is absorbed. </li></ul>
  14. 15. Open Frame SAW Touch Monitor
  15. 16. Capacitive <ul><li>Consist of an insulator such as glass </li></ul><ul><li>Coated with transparent conductor such as ITO (Indium Tin Oxide) </li></ul><ul><li>  touching the surface of the screen results in a distortion of the screen's electrostatic field, measurable as a change in capacitance. </li></ul>
  16. 18. Infrared <ul><li>An infrared touch screen uses an array of X-Y infrared LED and photo detector pairs around the edges of the screen to detect a disruption in the pattern of LED beams. </li></ul>
  17. 19. Optical imaging <ul><li>In this two or more image sensors are placed around the edges of the screen. A touch shows up as a shadow and each pair of cameras can then be pinpointed to locate the touch. </li></ul>
  18. 20. Comparison
  19. 21. PROS & CONS
  20. 22. PROS <ul><li>User friendly </li></ul><ul><li>Fast response </li></ul><ul><li>Error free input </li></ul><ul><li>Use finger , fingernail , gloved hands , stylus or any soft tip pointer </li></ul><ul><li>Easy to clean </li></ul><ul><li>Does not interfere mouse and keyboard </li></ul><ul><li>Make computing easy , powerful and fun </li></ul><ul><li>It benefits children </li></ul>
  21. 23. CONS <ul><li>Finger stress </li></ul><ul><li>Fingerprints </li></ul><ul><li>screen has to be really big not to miss things when pressing them with your finger </li></ul><ul><li>big screen leads to low battery life </li></ul><ul><li>touch screen means screen can’t be read too well in direct sunlight as it applies an additional not 100% transparent </li></ul><ul><li>Fatigue </li></ul>
  22. 24. Applications <ul><li>Museums </li></ul><ul><ul><ul><li>Library resource guides </li></ul></ul></ul><ul><ul><ul><li>Corporate information </li></ul></ul></ul><ul><ul><ul><li>Airport terminal passenger internet and emails </li></ul></ul></ul><ul><ul><ul><li>ATM’s </li></ul></ul></ul><ul><ul><ul><li>Restaurants' </li></ul></ul></ul><ul><ul><ul><li>Grocery stores </li></ul></ul></ul>
  23. 25. Conclusion <ul><li>Designers are trying to use touch screen to simplify input commands </li></ul><ul><li>Today , touch screen has becomes adopted by computers users of all abilities because it is simple, fast and innovative. </li></ul><ul><li>In future there is no usage of mouse and keyboards as they will be replaced by touch screen . </li></ul>
  24. 26. References <ul><li>http:// www.google.co.in/#q = Touch+screen+technology&as_sitesearch = wikipedia.org&sa = X&ei =LjVqTf2TL86GrAfO7ujCCw&ved=0CC4Q2wE&hl= en&biw =1280&bih=869&fp=dcc4ce35a3a0f2a4 </li></ul><ul><li>http:// www.google.co.in/#sclient = psy&hl = en&site =&source= hp&q = ppts+on+touch+screen+technology&aq =0&aqi=g1&aql=& oq = PPTs+on+Touch+screen&fp =1&cad=b </li></ul><ul><li>http://www.scribd.com/doc/29866129/Touchscreen-technology-ppt-by-pavan-kumar-M-T </li></ul><ul><li>http://wiki.fluidproject.org/display/fluid/Benchmarking+-+Touch+Screen+Options </li></ul>
  25. 27. Thank you