1. 1 TOUCH SCREEN Presented by SUMA.M.A B.Sc(4th SEM)Emcs 1

3. HOW IT WORKS ?

4. TOUCH SCREEN DIVERSITY

5. CONTROLERS USED

6. APPLICATIONS

7. PROS n CONS

8. CONCLUSION2

10. The display screen has a sensitive glass overlay placed on it and we could give the desired input by touching it.

11. The first touch sensor was developed by “Doctor Sam Hurst” in 1971.

13. Controller

17. Most Common types Of Touchscreen Technology 1. Resistive 2. Surface acoustic wave 3. Capacitive 4. Dispersive signal technology 5. Acoustic pulse recognition 9

18. 10 RESISTIVE Polyester Film . Top Resistive Layer. Conductive Transparent Metal Coating. Bottom Resistive Layer . Insulating Dots . Glass Substrate

19. 11 Polyester film CTMC Top resistive layer Bottom resistive layer Insulating dots Glass substrate

21. The inside surface of each of the two layers is coated with a transparent metal oxide coating

22. Pressing the flexible top sheet creates electrical contact between the resistive layers, producing a switch closing in the circuit.

25. During operation, electrodes around the panel's edge evenly distribute a low voltage across the conductive layer & creates an uniform electric field.

26. A finger touch draws current from each corner.

29. ST series Stylistic tablets from Fujitsu

30. P series and T series notebooks from Fujitsu

31. C1 series notebook from LG

32. Latitude XT series by Dell

33. TouchSmart PCs from HP (really an All-in-One PC )16 Most popular Usage

36. Fast

37. Finger or pen is usable (No cable required)

38. No keyboard necessary

39. Suited to: novices, application for information retrieval etc.

40. Low precision by using finger.

41. Bit Expensive.

42. User has to sit or stand closer to the screen

43. Power Consumption.

45. THANK YOU