上传者: moamoa
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上传时间: 2021-12-31 22:10:08
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文件大小: 9KB
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Introduction of Programmable controllers
From a simple heritage, these remarkable systems have evolved to not only replace electromechanical devices, but to solve an ever-increasing array of control problems in both process and nonprocess industries. By all indications, these microprocessor powered giants will continue to break new ground in the automated factory into the 1990s.