AT89S52 Single-chip processor to do deal with CPU control, the use of integrated temperature sensor DS18B20 collecting temperature data, Seven-Segment LED display to do, you can display the current temperature value, and can set an upper limit temperature and stored in DS18B20, we can adjust to limit the temperature value. Also designed all the way relay control, beyond the set temperature when the relay was driven pull-in and outside of the cooling fan circuit to start work and sound the alarm, temperature below the set temperature, the relay automatically disconnect the fan to stop working, the alarm lifting.

可调温度控制器程序.txt

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