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"CodeBus" is the largest source code store in internet, now total codes/documents: 3000000+, total file size: 5000GB+
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- 【Other】基于DS18B20的温度测量装置电图如图2所示：温度传感器DS18B20将被测环境温度转化成带符号的数字信号（以十六位补码形式,占两个字节）,传感器可置于离装置150米以内的任何地方,输出脚I/O直接与单片机的P1.1相连,R1为上拉电阻,传感器采用外部电源供电。89C2051是整个装置的控制核心,89C2051内带1K字节的FlashROM,用户程序存放在这里。显示器模块由四位一体的共阳数码管和4个9012组成。系统程序分传感器控制程
Update : 2011-05-11 | Size : 30119