#keyboard  device consisting of a set of keys on a piano or organ or typewriter or typesetting machine or computer or the like
  supertype:  #device  an instrumentality invented for a particular purpose; "the device is small enough to wear on your wrist"; "a device intended to conserve water"
  subtype:  #computer_keyboard  #piano_keyboard  #typewriter_keyboard
  member:  #key.lever
  part of:  #electronic_computer  #pipe_organ  #forte-piano  #terminal  #typesetting_machine  #typewriter
  part:  #action_mechanism__action  the operating part that transmits power to a mechanism; "the piano had a very stiff action"
     part:  #key.lever  a lever that actuates a mechanism when depressed

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