Transcript Trackball - CSEbeta RSET (S8)

Module 1
Prepared by
Elizabeth Isaac
DCS, RSET
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.
Flat-Panel Display
• Emissive display
– Plasma panels
– Thin-film electroluminescent displays
– LED
• Nonemissive displays
– LCD
Plasma panels
• Gas-discharge displays
Plasma panels
Thin-film electroluminescent display
LED
• A matrix of diodes is arranged to form the
pixel positions
• Picture definition is stored in a refresh buffer
LCD
• Liquid –Crystal displays
graphical input & output devices
graphical input device
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Keyboards
Mouse
Trackball and Spaceball
Joysticks
Data Glove
Digitizers
Image scanners
graphical input device
• Touch panels
• Light pens
• Voice systems
graphical input device
• Keyboards
Event drive device
Text entry
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
graphical input device
Z mouse
graphical input device
Trackball
Space ball
graphical input device
• Joysticks
graphical input device-data glove
graphical input device
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
graphical input device-digitizer
graphical input device-digitizer
graphical input device-image scanners
Touch panels
• Electrical touch panel
• Acoustical touch panel
Light pens
• Pencil shaped devices are used to select
screen positions by detecting the light coming
from points on the screen
Voice Systems
graphical output devices
• CRT
• Printers
• plotters
Hardcopy Output Devices
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Electrostatic plotters
Ink jet plotters
Thermal plotters
Dye sublimation printers
Pen and ink plotters
Laser printers
Color film camera
Ink jet plotters
• Continuous flow
• Drop-on-demand
Thermal plotters
Pen and ink plotters
• flat-bed
• Drum
• Pinch roller
Pen and ink plotters
Physical Interactive Devices
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Tablets
Light pens
Joysticks
Mouse
Control dials
Function switches or buttons
Data gloves
Physical Interactive Devices
• Touch screen
• keyboard
Data generation devices
• Convert data from hardcopy to digital form
1. Scanners
2. Three dimensional Digitizers
3. Motion Capture
Scanners