David Edward Hughes
David Edward Hughes ( 16 May 1831 – 22 January 1900 ) , was a British-American inventor , practical experimenter , and professor of music known for his work on the printing telegraph and the microphone . 
<triplet> David Edward Hughes <subj> 16 May 1831 <obj> date of birth <subj> 22 January 1900 <obj> date of death