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一、计算机DDC控制的趋势 自从1971年4位微处理机芯片出现以来,短短的十来年已发展到16位机的成熟阶段,32位机也已出现,微型计算机的应用可以说“无孔不入”地深入到各行各业乃至人们日常生活之中,其主要原因在于微型计算机体积小、功能强、容易掌握、价格便宜。正因为如此,过去用一台计算机控制整个机组、全部生产过程的大规模集中控制系统,发展成为当今的信息集中处理,控制分散化的集散型控制系统。这样,就把过去一台计
First, the trend of computer DDC control Since the advent of four microprocessor chips in 1971, a short span of ten years has developed to 16-bit machine maturity stage, 32-bit machine has also emerged, the application of micro-computer can be said that “all-pervading” Depth to all walks of life and even people in their daily lives, mainly due to the small size of the computer, powerful, easy to grasp, cheap. Because of this, in the past with a computer to control the entire unit, the entire production process of large-scale centralized control system, developed into today’s centralized information processing, control decentralized distributed control system. In this way, put a meter in the past