#light-emitting_diode__LED  diode such that light emitted at a p-n junction is proportional to the bias current; color depends on the material used
  supertype:  #semiconductor_diode__semiconductordiode__diode__junction_rectifier__crystal_rectifier__crystalrectifier  a semiconductor that consists of a p-n junction
  part of:  #digital_display__digitaldisplay__alphanumeric_display  a display that gives the information in the form of characters (numbers or letters)
     part of:  #digital_voltmeter__digitalvoltmeter  an electronic voltmeter that gives readings in digits
     part of:  #digital_watch__digitalwatch  a watch with a digital display

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