Saturday 16 June 2012

Keyboard

Keyboard is an input device. It is used to give instructions to the system. The keyboard is used to type the letters and it can be used for performing shortcuts while accessing.

Connector types:

  • DIN Connector

  • PS/2  Connector

  • Serial  Connector

  • USB

  • Wireless
     

Types:

  • XT Keyboard
              XT keyboard are the keyboards used with Fullsize AT and Baby AT motherboards. It has 83 keys. XT keyboard contains "Function keys" from F1 to F10. XT keyboard uses DIN connector.


  • AT Keyboard
              AT keyboard was introduced with 84 keys. Later it was developed with 101 keys ( as enhanced). AT keyboard also uses the DIN connector for connecting the keyboard with the system unit.



  • Standard Keyboard
                   It is the enhanced version of AT keyboard. Standard keyboard contains some additional function keys like Insert, Delete, Home, End, Page Up, Page Down. The standard keyboard is available with both serial connector and with PS/2 connector.


  • Multimedia Keyboard
                          Multimedia keyboard is the modern keyboard. It is manufactured with keys such as E-mail, keys for media player, etc,. It is available with PS/2 and USB connector.

  • Ergonomic Keyboard
                    Ergonomic keyboard is designed in a different shape which will be more convenient to the user for typing. It is partitioned into two parts which is for easy to use. Ergonomic keyboard is available with PS/2 and USB connectors.

              

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