Output device

Output device

1. What are?

   • Output devices are computer hardwares that proccess data from a computer in order to perform a task.

2. Display devices

   • Are an output device that visually conveys text, graphics, and video information.
   • Soft copy
     • Is the name given to the information shown on a display device because the information exists electronically and is displayed for a temporary period of time
   • Examples
     • Display devices include: - CRT monitors - LCD monitors and displays - Gas plasma monitors - Televisions

3. Input/output

   • Is the communication between an information processing system and the outside world. Inputs are the signals or data received by the system, and outputs are the signals or data sent from it.

4. Types output

   • Some types of output are: Text: Are the characters used to create words, sentences, and paragraphs. Graphics: are digital representations of nontext information such as drawings or photographs. Tactile: Are elements that are useful for blind people. Audio: Is music, speech, or any other sound. Video: Are images played back at speeds to provide the appearance of full motion.
   • Graphics
     • A digital image is a numeric representation of an image stored on a computer. Digital images usually refers to raster images also called bitmap images. Raster images are composed of pixels and is suited for photo-realistic images.
   • Tactile
     • Is technology which takes advantage of the sense of touch by applying forces, vibrations, or motions to the user. are devices that have the capability of producing raised line drawings. There are also handheld devices that use an array of vibrating pins to present a tactile outline of the characters or text under the viewing window of the device.
   • Audio
     • Speech output systems can be used to read screen text to computer users. Also it is used to produce music, speech or other sounds.

5. Examples

   • Some examples of output devices and input/output devices are: - Speakers - Headphones - Screen(Monitor) - Video - Plotter - Wireless