Visual Output

• Computers provide several types of visual output in multiple formats. The two most common types of visual-output devices are monitors and printers. Monitors display video output that is sent to the monitor from the video card. There are two basic types of monitors including cathode-ray tube and flat panel. Printers are another form of visual output that takes the form of printed pages. There are a wide variety of printers that support a plethora of printing options for different types of media. A third type of less common device is the projector. Modern projectors can create high-resolution images capable of covering a wall. Some projectors also support 3D output.
  
  

Audio Output

• Most forms of computer audio output are handled by computer speakers or headphones. The earliest type of computer speakers is the PC speaker, which uses a series of beeps to indicate the state of the system. In modern computers, audio data is processed and converted into the appropriate format by the computer's sound card. Audio output is typically handled using analog, USB or optical outputs. These outputs carry information from the sound card to the speakers or headphones. Audio output is available in several formats designed to support different amounts and configurations of speakers.
  
  

Data Output

• The most common type of computer output is in the form of data. There are several devices designed to generate computer data. The most common data-output devices are modems and network cards. These devices transfer information between computer networks, allowing computers to communicate. Bluetooth devices and wireless cards allow computers to communicate with other devices including keyboards, mice, phones, network routers, printers and more.
  
  

Tactile Output

• Devices designed to provide tactile output are generally restricted to specific functions. Braille printers provide an alternative form of output for visually impaired users. Instead of printing images or words on paper using ink, Braille printers provide alpha-numeric output in the form of raised dots on the page. Another common use of tactile output in computers is vibration or force feedback-enabled game controllers. These devices include console-style controllers and joysticks that vibrate in response to events in the game.