dcs is the abbreviation of TOTALDISTRIBUTEDCONTROLSYSTEM in English.Refers to the control of risk dispersion,management and concentration of display.In the late 1960s,someone developed a programmable logic controller(ProgrammableLogicController).Referred to as PLC.Mainly used in automobile manufacturing.In the mid-1970s,it was introduced to the market with DCS that completed analog quantity control,replacing the analog instrument control mainly based on PID operation.The idea of DCS was first proposed by the original instrument manufacturer,which was mainly used in the chemical industry at that time.Later,the computer industry was engaged in the development of DCS.In the 1970s,computer technology was not yet mature,and computer technology was not yet developed.The operation station,controller,I/O board and network interface board are all developed by the DCS manufacturer,that is,all components are dedicated.
dcs为分散控制系统的英文（TOTALDISTRIBUTEDCONTROLSYSTEM）简称。指的是控制危险分散、管理和显示集中。60年代末有人研制了作逻辑运算的可编程序控制器（ProgrammableLogicController）。简称PLC。主要应用于汽车制造业。70年代中期以完成模拟量控制的DCS推向市场，代替以PID运算为主的模拟仪表控制。首先提出DCS这样一种思想的是原制造仪表的厂商，当时主要应用于化工行业。后又有计算机行业从事DCS的开发。70年代微机技术还不成熟，计算机技术还不够发达。操作站、控制器、I/O板和网络接口板等都是DCS生产厂家自行开发的，也就是所有部件都是专用的。
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