Input, Output, and Both I/O devices

INPUT:
- Graphics Tablets
- Cameras
- Video Captures Hardware
- Trackballs
- Barcode reader
- Digital camera
- Game pad
- Joystick
- Keyboard
- Microphone
- MIDI keyboard
- Mouse
- Scanner
- Webcam
- Touchpads
- Pen input
- electronic whiteboard
- magnetic key cards

OUTPUT:
- monitor
- printers
- plotters
- projector
- LCD projection panels
- computer output microfilm
- speakers
- radio

BOTH INPUT-OUTPUT:
- modems
- network cards
- touch screen
- headsets
- facsimile
- audio cards/sound card
- USB