Copyright  Goodheart-Willcox  Co.,  Inc.  144  Unit  1  Computing  Fundamentals  Extensions  are  hidden  Extensions  are  shown  Goodheart-Willcox  Publisher  Figure  4-9.  File  name  extensions  are  hidden  by  default,  but  can  be  displayed.  David  A.  Huffman,  a  computer  scientist  and  inventor,  was  an  early  pioneer  in  the  development  of  computers.  He  won  many  awards.  However,  the  one  he  earned  in  1998  from  the  IEEE  Information  Theory  Society  made  a  big  impact  on  data  compression  technologies.  This  award  recognized  his  invention  of  the  Huffman  minimum-length  lossless  data-compression  code.  The  compression  code  was  the  topic  of  a  term  paper  he  wrote  while  a  graduate  student  at  the  Massachusetts  Institute  of  Technology  in  1952.  Before  his  method  was  used,  file  compression  tended  to  lose  some  or  much  of  the  fidelity  of  the  original  file.  Huffman’s  idea  defined  a  compression  scheme  whereby  none  of  the  data  were  lost.  Decompression  restored  the  file  to  its  original  fidelity.  This  data  compression  method  has  since  been  used  to  compress  image  files  as  well  as  the  data  stream  for  high-definition  television  (HDTV)  broadcasts.  The  technology  is  also  used  in  fax  machines  and  modems.  The  compression  method  is  known  as  Huffman  encoding.  Huffman  was  also  very  interested  in  origami,  the  ancient  Japanese  art  of  paper  folding.  He  contributed  to  the  branch  of  mathematics  involved  in  the  paper  folding  techniques.  Titans  of  Technology  
