本文档对初学51单片机者有很好的帮助。里面有40个51单片机实验程序---汇编和c语言都有，还有相应的电路等。非常适合初学者。-This document is for beginners who have a good 51 MCU help. Inside there are 40--- 51 MCU experimental procedure to compile and c language has, as well as the corresponding circuit. Very suitable for beginners.