1. Display devices
1.1. LCD monitor
1.1.1. uses a liquid compound to present information on a display device
1.2. Plasma monitors
1.2.1. use gas plasma technology
1.2.2. screen sizes up to 150 inches
1.3. HDTV
1.3.1. most advanced form of digital television
1.4. CRT monitor
1.4.1. use cathode‐ray tube
1.4.2. larger footprint than do LCD monitors
2. Speakers, headphones, and earbuds
2.1. Headphones
2.1.1. speakers that cover your head
2.1.2. placed outside of the ear
2.2. Earbuds
2.2.1. rest inside the ear canal
2.3. speakers
2.4. VoIP
3. Printers
3.1. produces text and graphics on a physical
3.1.1. nonimpact printer
3.1.1.1. Ink‐jet printers
3.1.1.1.1. Color or black‐and‐white
3.1.1.1.2. Printers with a higher dpi produce a higher quality output
3.1.1.2. Photo printers
3.1.1.2.1. Most use ink‐jet technology
3.1.1.2.2. print photos directly from a digital camera
3.1.1.2.3. Print from a memory card and preview photos on a built‐in LCD screen
3.1.1.3. Laser printers
3.1.1.3.1. multifunction peripheral(MFP) is a single device
3.1.1.4. Thermal printers
3.1.1.4.1. images by pushing electrically heated pins
3.1.1.5. Mobile printers
3.1.1.5.1. small, lightweight, battery‐powered
3.1.1.6. Label and postage printers
3.1.1.6.1. prints on adhesive‐type material
3.1.1.7. Plotters
3.1.1.7.1. produce high‐quality drawings
3.1.1.8. PlottersLarge‐format printers
3.1.1.8.1. create photo‐realistic quality color prints on a larger scale
3.1.2. Impact printers
3.1.2.1. dot‐matrix printer
3.1.2.2. line printer
4. Other Output Devices
4.1. data projector
4.2. interactive whiteboard
4.2.1. touch‐sensitive device
4.2.2. resembling a dry‐erase board
4.3. Force‐feedback
4.4. Tactile output
4.4.1. joy stick