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PROGRAMMING LANGUAGES   A   programming language   is a   formal language   comprising a   set of instructions   that produce various kinds of   output . Programming languages are used in   computer programming   to implement   algorithms . Most programming languages consist of instructions for computers. There are programmable machines that use a set of specific instructions, rather than general programming languages. Early ones preceded the invention of the digital computer, the first probably being the automatic flute player described in the 9th century by the brothers Musa in Baghdad, during the Islamic Golden Age. Since the early 1800s, programs have been used to direct the behavior of machines such as Jacquard looms, music boxes, and player pianos. [2]  The programs for these machines (such as a player piano's scrolls) did not produce different beh...