一个可控温度报警装置的源码,用DS18B20采集温度,用4个按键设置温度的上下限并存在EEPROM中,按键可实现单击和长按,且时间精确,也是一个不错的键盘程序.4个数码管显示温度,4个数码管用来设定.--A controlled temperature alarm device source, with DS18B20 collecting temperature, with four buttons to set the temperature of the upper and lower l