PLC programming technique includes experience design method, logic design method, cycle diagram design method and sequential control design method.
PLC编程技术包括：经验设计法，逻辑设计法、时序图设计法、顺序控制设计法等编程方法。
The circuit includes a sequential logic drive circuit, a DC bias voltage circuit and a monolithic temperature control circuit for the focal plane array.
其中包括时序逻辑驱动电路、直流偏置电压电路及单芯片焦平面温度控制电路。
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