Description
相同点在微电子技术发展的背景下，从硬件的角度来看，PLC、工业计算机、集散系统(DCS)之间的差别正在缩小，都将由类似的一些微电子元件、微处理器、大容量半导体存储器和I/O模件组成。编程方面也有很多相同点。
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