PL/1 Programming language is a third generation programming language. The first name of the PL/1 Programming language was New Programming Language NPL and then it was changed to PL/1 because it confuses with the National Physical Laboratoryin England. PL/1 Programming language was develop as a alternative to the assembler languages e.g COBOL, FORTRAN. Pl/1 programming language is extensible, for new hardware and new application areas. It is machine-independent and operate effectively across the main hardware and operating system ranges.
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