Bram Jan Loopstra

Bram Jan Loopstra (1925 – 1979)[https://archief.amsterdam/indexen/archiefkaarten_1939-1994/ Amsterdam Archive Cards] was a Dutch computing pioneer who worked at the Mathematisch Centrum, Amsterdam[http://www-set.win.tue.nl/UnsungHeroes/heroes/scholten-loopstra.html Unsung Heroes in Dutch Computing History — Carel S. Scholten and Bram Jan Loopstra] {{Webarchive|url=https://web.archive.org/web/20190216110959/http://www-set.win.tue.nl/UnsungHeroes/heroes/scholten-loopstra.html |date=2019-02-16 }} — Illustrated report of his work at the TU Eindhoven and then at Electrologica with Adriaan van Wijngaarden, Carel S. Scholten and Gerrit Blaauw.Baayen, P. C., and J. Nuis. "[http://oai.cwi.nl/oai/asset/1706/1706A.pdf In Memoriam A. van Wijngaarden 1916-1987] {{Webarchive|url=https://web.archive.org/web/20141011215701/http://oai.cwi.nl/oai/asset/1706/1706A.pdf |date=2014-10-11 }}." From 1956 until at least 1963 he was technical director of Electrologica.[https://heerdebeer.org/History/ComputerPioneers/publications/Electrologica_Nederlands_eerste_computerindustrie.pdf Nederlands eerste computerindustrie: van Electrologica tot Philips-Electrologica] {{in lang|nl}} At his death after a long illness on March 22, 1979, he was adjunct director of the Philips International Institute.[http://leiden.courant.nu/issue/NLC/1979-03-23/edition/0/page/18 Obituary] in Nieuwe Leidsche Courant, 23 March 1979.

At the Mathematisch Centrum he contributed to the ARRA I and II and ARMAC.