input & output

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lets share this information about input and output devices..just simple and easy reading okk..soo lets starts readings guys!emmm before i forget this article from and i just add up some information to make it more interesting.


http://www.moe.gov.my/bpk/download/modul/ictlm/2%20Hardware%20Module/Module5-Input%20Output%20Storage%20Devices.pdf


 Input Devices 
Meaning:
Input devices are any electronic devices connected to a computer that produce input
signals.
*A keyboard is an example of input device for text input.
*A scanner is an example of input device for graphical as well as text
  input.
*A microphone is an example of input device for audio input
*A webcam is an example of an input device for video input.
*A mouse is also an input device but it is called a pointing device used
  to input data into a computer.


Output Devices 
Meaning:
An output device is hardware that is capable of delivering or showing information to one or
more users. An output device displays, prints and presents the results of a computer’s work.
Types of Output Devices
*A display device is an output device that visually conveys texts, graphics and video
  information.
*A monitor is an example of an output device that can be used to display text. It can also
 display graphics and video. It is similar to a television set that accepts video signals from a
 computer and displays information on its screen.
*A Liquid Crystal Display (LCD) projector uses its own light source to project what is
 displayed on the computer on a wall or projection screen. A digital light processing (DLP)
 projector uses tiny mirrors to reflect light which can be seen clearly in a well-lit room.  ICTL for Secondary     School
*A printer is an output device that prints text and graphics on a physical medium such as
paper or transparency film.
*A photo printer is a colour printer that produces photo quality pictures.
*An image setter produces high quality output compared to an ordinary laser printer. An
 image setter is a high resolution output device that can transfer electronic text and graphics directly to film,     plates or photo-sensitive paper.
*An audio output device produces music, speech, or other sounds. A pair of speakers is an
 audio output device that generates sound. The headphone is a pair of small speakers
 placed over the ears and plugged into a port on the sound card. A woofer or subwoofer is
 used to boost the low bass sound and is connected to the port on the sound card.