Dictionary of Computer and Internet Terms: PL/1 (PL/I)
PL/1 (PL/I)
a powerful programming language developed by IBM in the early 1960s to accompany its System/360 computer. The name stands for Programming Language One.
PL/1 can be described as a combination ofALGOL 60 block structure, FORTRAN arithmetic, and COBOL data structuring. PL/1 is the language of choice for writing complex programs on IBM mainframe computers, but it has received little use on other types of machines.
