说明：  一个四通道温度检测器，直接由电脑供电，在PC上显示，电路简单...外国人设计的
(This is a four-channel temperature measurmet adapter that works without external power supply. It will suitable for measureing temperature and logging its data with a PC. The circuit diagram is very simple and no adjustment is required, everybody will able to build it with ease :-))