一、发展 可编程序控制器的发展和集成电路、大规模集成电路的发展是分不开的。60年代末至今大致每五年构成一个发展阶段。 60年代末,美国基于通用集成电路和小型计算机技术,研制出世界上第一台可编程 First, the development of programmable logic controller and integrated circuits, the development of large-scale integrated circuits are inseparable. From the late 1960s to the present, roughly every five years constitute a stage of development. The late 1960s, the United States based on general-purpose integrated circuits and small computer technology, developed the world’s first programmable