Language for Systems Development

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The Language for Systems Development (LSD) was a programming language developed in 1971 at Brown University for the IBM S/360.[1][2] The language was also referred to as LSyD due to the negative connotations of the acronym "LSD" at the time. LSD was derived from PL/I.


  1. ^ Bergeron, R. Daniel; Gannon, John D.; van Dam, Andries (1971). Language for Systems Development. pp. 50–72. doi:10.1145/800234.807060. 
  2. ^ "LSD(ID:3109/lsd001)". HOPL: an interactive Roster of Programming Languages. Murdoch University. Retrieved 7 April 2011.