Physical Devices

Actual, physical input devices include:

• Dials (Potentiometers)
• Selectors
• Pushbuttons
• Switches
• Keyboards (collections of pushbuttons called ``keys'')
• Trackballs (relative motion)
• Mice (relative motion)
• Joysticks (relative motion, direction)
• Tablets (absolute position)
• Etc.

Readings: Hearn and Baker, Chapter 8, Red book: 8.1, White book: 8.1