Terry Archer Welch (January 20, 1939 – November 22, 1988) was an American computer scientist.
Along with Abraham Lempel and Jacob Ziv, he developed the lossless Lempel–Ziv–Welch (LZW) compression algorithm, which was published in 1984.
He taught at the University of Texas at Austin and worked in computer design at Honeywell in Waltham, Massachusetts.
He taught at the University of Texas in Austin until joining the Sperry Research Center, Sudbury, Massachusetts, in 1976 where the paper about the LZW algorithm was published.
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