1. Module 1 Prepared by Elizabeth Isaac DCS, RSET

2. Flat-Panel Display 1. Flat-Panel displays are thinner. 2. Its weight is less. 3. Need less power compared to a CRT. 4. Do not emit radiation.

3. Flat-Panel Display Emissive display – Plasma panels – Thin-film electroluminescent displays – LED Nonemissive displays – LCD

4. Plasma panels Gas-discharge displays

5. Plasma panels

6. Thin-film electroluminescent display

8. LED A matrix of diodes is arranged to form the pixel positions Picture definition is stored in a refresh buffer

9. LCD Liquid –Crystal displays

12. graphical input & output devices graphical input device Keyboards Mouse Trackball and Spaceball Joysticks Data Glove Digitizers Image scanners

13. graphical input device Touch panels Light pens Voice systems

14. graphical input device Keyboards Event drive device Text entry

15. Mouse Types – Mechanical – Optical – Wireless Features – Palm-sized – 1 or 2 buttons – Wheel Position a pointer / cursor on the screen Controls drawing instruments in graphics applications Communicate commands to a program

16. graphical input device Z mouse

17. graphical input device Trackball

18. Space ball

19. graphical input device Joysticks

20. graphical input device-data glove

21. graphical input device

22. graphical input device-digitizer A device for drawing, painting or interactively selecting the coordinate positions Graphics Tablet or data tablet inputs a 2d coordinates by activating a hand cursor or stylus

23. graphical input device-digitizer

25. graphical input device-image scanners

27. Touch panels Electrical touch panel Acoustical touch panel

28. Light pens Pencil shaped devices are used to select screen positions by detecting the light coming from points on the screen Voice Systems

29. graphical output devices CRT Printers plotters

30. Hardcopy Output Devices Electrostatic plotters Ink jet plotters Thermal plotters Dye sublimation printers Pen and ink plotters Laser printers Color film camera

31. Ink jet plotters Continuous flow Drop-on-demand

33. Thermal plotters

34. Pen and ink plotters flat-bed Drum Pinch roller

35. Pen and ink plotters

36. Physical Interactive Devices Tablets Light pens Joysticks Mouse Control dials Function switches or buttons Data gloves

37. Physical Interactive Devices Touch screen keyboard

38. Data generation devices Convert data from hardcopy to digital form 1.Scanners 2.Three dimensional Digitizers 3.Motion Capture

39. Scanners