Caribbean Secondary Education Certificate - Information Technology/Output Devices

From WikiEducator
Jump to: navigation, search

Output Devices and Media

An output device is any piece of computer hardware equipment used to communicate the results of data processing carried out by an information processing system (such as a computer) to the outside world.

In computing, input/output, or I/O, refers to the communication between an information processing system (such as a computer), and the outside world. Inputs are the signals or data sent to the system, and outputs are the signals or data sent by the system to the outside.

The most common input devices used by the computer are the keyboard and mouse. The keyboard allows the entry of textual information while the mouse allows the selection of a point on the screen by moving a screen cursor to the point and pressing a mouse button. The most common outputs are monitors and speakers.

Some Output Devices

  • Visual display unit - (also called VDU, monitor, or screen) offers a two-dimensional visual presentation of information.a device that display information on a screen.
  • Speaker - A speaker can be used for various sounds meant to alert the user, as well as music and spoken text.
  • Printer - Printers produce a permanent hard copy of the information on paper.A computer peripheral that place texts on paper.

Other Output Devices

  • Computer display, display device
    • Cathode ray tube
    • Flat panel display
    • Vector display
    • Liquid Crystal Display
    • Storage tube
  • Computer printer
    • Laser printer
    • Inkjet printer
    • Electrostatic printer
    • Thermal printer
  • Film recorder
  • Industrial Digital Printers
  • Plotter
  • Head-mounted display
  • Projectors
    • Video projector
    • LCD projector
    • Laser projector
  • Volumetric displays
    • Swept-volume display
    • Varifocal mirror display
    • Emissive volume display
    • Laser display
    • Holographic display
  • Early devices
    • IBM 740
    • IBM 2250
    • IBM 1627
    • Tektronix 4014


Output Devices