这是我做的第一个单片机实验板的原理图。 导师让做的。USB下载线实验板原理图传上来与大家分享希望对大家有点用吧-This is what I did the first experiment a microcontroller board schematic. Instructors to do. USB download cable test board schematics to share with you want to pass up a little bit with the bar