介绍了可编程序逻辑控制器（PLC）在输油泵站自动控制系统中的作用。
The paper introduces the function of PLC in the automatic control system of pumping station.
本文提出了用MCS-51单片机设计简易型可编程序逻辑控制器（PLC）硬件和软件的基本方法。
The basic method of designing a PLC using MCS 51 micro controller is presented in this paper.
本文提出了用MCS-51单片机设计简易型可编程序逻辑控制器（PLC）硬件和软件的基本方法。
The basic method of designing a PLC using MCS 51 micro controller is presented in this paper.
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