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an American computer scientist and consultant, in the 70s and 80s affiliated with [https://en.wikipedia.org/wiki/Control_Data_Corporation Control Data Corporation]. He was team member and [[CDC Cyber]] hardware consultant of the [[Northwestern University|Northwestern University's]] chess program [[Chess (Program)|Chess]] <ref>[https://www.game-ai-forum.org/icga-tournaments/person.php?id=434 David Cahlander's ICGA Tournaments]</ref>, and operated and repesented Chess 4.x at various [[Tournamentsand Matches|tournaments]] and man-machine matches in the late 70s and early 80s, in particular the [[WCCC 1977]] and the [[WCCC 1980]], [[ACM 1978]] and [[ACM 1979]], and the [[Levy versus Chess 1978|Levy versus Chess 1978 match]]. David Cahlander designed the famous Chess 4.7 [[Sensory Board]], first used at ACM 1978.