一些关于MAX232引脚的介绍，对了解MAX232非常有用-Introduction of a number of pins on the MAX232, MAX232 is very useful in understanding the

基于at89c52的测温系统，采用ds18b20来采集温度，经过MAX232进行ad转换，数码管显示！-At89c52-based temperature measurement system, using ds18b20 to collect temperature, after MAX232 AD conversion, the digital display!