文件名称:baojing
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实时采集当前环境温度值,并显示于数码管上。
同时,当温度高于某一值时(此处设为31摄氏度),蜂鸣器便会发出报警。
而当低于该值时,蜂鸣器自动停止报警。
试验时,可用手触摸DS18B20,使其温度升高到31度,观察现象。-Real-time acquisition value of the ambient temperature, and display digital tube. Meanwhile, when the temperature is higher than a certain value (here set to 31 degrees Celsius), the buzzer alarm will be issued. Below this value, the buzzer automatically stop the alarm. Test, you can touch the DS18B20 its temperature rises to 31 degrees, the observed phenomena.
同时,当温度高于某一值时(此处设为31摄氏度),蜂鸣器便会发出报警。
而当低于该值时,蜂鸣器自动停止报警。
试验时,可用手触摸DS18B20,使其温度升高到31度,观察现象。-Real-time acquisition value of the ambient temperature, and display digital tube. Meanwhile, when the temperature is higher than a certain value (here set to 31 degrees Celsius), the buzzer alarm will be issued. Below this value, the buzzer automatically stop the alarm. Test, you can touch the DS18B20 its temperature rises to 31 degrees, the observed phenomena.
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baojing.c
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