Output Unit

Output Unit

           Output devices are used to communicate the processed information to the user.The results of the processing operation in machine readable form must be made available in a human readable form.The output devices translate processed data in machine readable form to s form that can be interpreted by humans.The most common types of output devices are Monitors, which resembles the television screen and printer, which copy from the computer onto paper.Outputs can be obtained in the form of drawings and voices.

Output Devices :

           To be effective, information must be produced in an usable form.An output device is any machine capable of representing information from a computer.Output devices can be divided into 2 : (i) Hard copy devices : Output is in direct usable form.They produce a permanent record on paper. (ii) Soft copy devices : Produce output that cannot be used directly.They do not produce a permanent record.Hard copy devices are slow compare to soft copy devices.Some hard copy devices are printers, plotters, etc.Examples of soft copy  devices are Visual Display unit (VDU),Liquid Crystal Displays(LCD), etc.

          Output devices are also classified as commonly used(VDU, Printers) and special purpose devices(Plotters, LCD, etc).