Output devices

Output devices

1. An output device is computer hardware that uses received data and commands from a computer in order to perform a task.

2. Display devices

   • A display device is an output device that visually conveys text, graphics, and video information.
   • Information shown on a display device is called soft copy
   • Display devices include CRT monitors, LCD monitors and displays, gas plasma monitors, and televisions

3. Input-Output

   • In computing, input/output refers to the communication between an information processing system and the outside world.
   • Inputs are the signals or data received by the system
   • outputs are the signals or data sent from it.

4. Types of output

   • Some types of output are text, graphics,audio, and video.
     • Text consists of characters that are used to create words
   • Graphics are digital representations of nontext information such as drawings, charts, photographs, and animation .
   • Tactile output .
   • Audio is music, speech, or any other sound.

5. Graphical output displayed on a screen

   • A digital image is a numeric representation of an image stored on a computer.

6. Tactile

   • Haptic technology is a tactile feedback technology which takes advantage of the sense of touch by applying forces, vibrations, or motions to the user

7. Audio

   • Speech output systems can be used to read screen text to computer users.

8. Scent

   • See Digital scent technology.