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1971年，日本從美國引進(jìn)了這項(xiàng)新技術(shù)，很快研制出了日本臺(tái)可編程序控制器DSC-8。1973年，西歐國家也研制出了他們的臺(tái)可編程序控制器。我國從1974年開始研制，1977年開始工業(yè)應(yīng)用。早期的可編程序控制器是為取代繼電器控制線路、存儲(chǔ)程序指令、完成順序控制而設(shè)計(jì)的。主要用于：1. 邏輯運(yùn)算 2. 計(jì)時(shí)，計(jì)數(shù)等順序控制，均屬開關(guān)量控制。所以，通常稱為可編程序邏輯控制器（PLC—Programmable Logic Controller）。 進(jìn)入70年代，隨著微電子技術(shù)的發(fā)展，PLC采用了通用微處理器，這種控制器就不再局限于當(dāng)初的邏輯運(yùn)算了，功能不斷增強(qiáng)。因此，實(shí)際上應(yīng)稱之為PC——可編程序控制器。
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廈門莫格電氣自動(dòng)化有限公司
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