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In page Maple (software):

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The first concept of Maple arose from a meeting in late 1980 at the University of Waterloo.[1] Researchers at the university wished to purchase a computer powerful enough to run the Lisp-based computer algebra system Macsyma. Instead, they opted to develop their own computer algebra system, named Maple, that would run on lower cost computers. Aiming for portability, they began writing Maple in programming languages from the BCPL family (initially using a subset of B and C, and later on only C).[1] A first limited version appeared after three weeks, and fuller versions entered mainstream use beginning in 1982.[2] By the end of 1983, over 50 universities had copies of Maple installed on their machines.[citation needed]