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Douglas T. Ross

Of Lexington, 77, January 31, from complications of a fall. Beloved husband of Patricia M. Ross. Loving father of Jane L. Ross of Brookline, Kathryn R. Chow and her husband Henry R. Smedley of New York City, and Margaret R. Thrasher of Durham NH, and three grandchildren: Karen, Nicholas, and Bethany Thrasher. Doug is survived by two sisters, Margaret J. Hastings and her husband James B. Hastings of Princeton NJ and Frances R. Grimm and her husband Robert J. Grimm of Portland OR. As Head of the Computer Application Group at the MIT Electronic Systems Laboratory, Doug led the development of the Automatically Programmed Tool Language (APT), a special purpose programming language that became the world standard for programming computer-controlled machine tools. He then turned his attention to the development of a software engineering methodology and supporting tools. This led to the development while at MIT of the first software engineering language and supporting tools, the AED system. In 1969 Doug founded SofTech, Inc. where he continued to work on software engineering standards. While at SofTech, Doug conceived of SA, a graphic notation and methodology for system description. SA has been successfully applied worldwide as SofTechs Structured Analysis and Design Technique (SADT) or as the U.S. government standard IDEF0. Memorial Service with reception at Hancock United Church of Christ, Congregational, 1912 Massachusetts Ave., Lexington at 2:00 PM Sun., February 11. Memorial contributions may be sent to the Ross Sabbatical Fund, Oberlin College, 50 West Lorain St., Oberlin, OH 44074.
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