The I/O design of PLC controller, the hardware configuration and the main routine and auto-machining subroutine of software program are presented.

介绍了系统PLC主控制器I/O端口设计，系统硬件组成和系统软件中主程序及自动加工子程序设计；

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Therefore, the software design of CAI for foreign language teaching should be based on modern information technology, mainly according to linguistics, theory of language acquisition, and o…

CAI外语教学软件的设计应当以语言学、语言习得理论、外语教学理论、教学设计理论、人工智能为主要依据，构建在现代信息技术之上。

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