stc90c516rd+，加8位共阴极数码管显示ds18b20温度，与网上很多的程序不同的是，本程序有写config的操作可以实现小数点后两位的精度，范围是从-55到125摄氏度(stc90c516rd+, plus eight common cathode LED display ds18b20 temperature, and a lot of programs online is different, this program has the write operation can be realized config two decimal places of accuracy, the range is from-55 to 125 degrees Celsius)