1. Printers
1.1. Nonimpact printer
1.1.1. Ink-jets printers
1.1.1.1. sprays tiny drops of liquid ink
1.1.2. Photo printers
1.1.2.1. produce photo‐lab‐quality pictures
1.1.3. Laser printers
1.1.3.1. High speed and quality
1.1.4. Thermal printers
1.1.4.1. generates images by pushing electrically heated pins
1.1.5. Mobile printers
1.1.5.1. a small, lightweight, battery‐powered printer
1.1.6. Label & postage printers
1.1.6.1. adhesive‐type material / prints postage stamps
1.1.7. Plotters
1.1.7.1. produce high‐quality drawings
1.1.8. Large-format printers
1.1.8.1. create photo‐realistic quality color on a larger scale
2. Display devices
2.1. Monitors
2.1.1. LCD
2.1.1.1. uses a liquid compound to present information
2.1.2. Plasma Monitor
2.1.2.1. use gas plastma technoly
2.1.3. CRT
2.1.3.1. contains a cathode-ray tube
2.2. Television
2.2.1. HTV
2.2.1.1. higher quality output
2.2.2. HDTV
2.2.2.1. the most advanced of digital television
3. Headphones , Speakers , Earbuds
3.1. Headphones
3.1.1. speakers that cover your head or are placed outside of the ear
3.2. Speakers
3.2.1. Generate higher‐quality sounds
3.3. Earbuds
3.3.1. rest inside the ear canal
4. Other output devices
4.1. Data projectors
4.1.1. device that takes the text and images displaying on a larger screen
4.2. Force-feedbacks game controllers
4.2.1. sends resistance to the device in response to actions of the user
4.3. Tactile output
4.3.1. provides the user with a physical response
4.4. Interactive whiteboard
4.4.1. a touch‐sensitive device, resembling a dry‐erase board