Headphones Laser Printer Speakers
Flat-screen Monitor Inkjet Printer
writing visual sound
...used to listen without disturbing other people.
...used for letters, putting web pages on paper and making colour photographs.
...is flat, energy efficient, and does not flicker.
...for richer sounds, music, movies and games. Can be used by more than one person.
...used in the office to make hundreds of pages every month. Usually black and white output.