Touch Screen Devices

1. By Mr. Eric Cal

5.  Sits above the display

8.  Do all questions
 You have five minute to complete the task
 Use your book if required
 SILENCE PLEASE...

9.  Based on light-beam interruption technology

10.  Driver (bridge)
 Controller (Police)
 Sensors (Traffic)

11.  Respond to the pressure of a finger or stylus.
 When pressure is applied to the screen, the
controller registers the touch event

12.  One of the most advanced
 Uses sound waves and not infrared

13.  Glass panel with a capacitive (charge storing)
material coating its surface
 Current is drawn to finger

14.  Touch your nose!
 Thank you very much.