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介绍了DS1820集成温度传感器的工作原理，并用PC机打印口与DS1820实现了测温的硬件电路，同时给出软件框图，该电路结构简单、成本低、不用调试。
Describes the working principle of DS1820 integrated temperature sensor, and realizes the temperature measurement hardware circuit with PC printer port and DS1820, at the same time gives the software block diagram, the circuit structure is simple, low cost, without debugging.