这是2009全国电子大赛的本科组B题--声音导引小车的论文。里面原理图，制作思路及程序都列出来了，希望对你有用。-This is the 2009 National Undergraduate Electronic Competition Group B title- the voice-guided car papers. Inside schematics, production ideas and programs are listed, and hope to be useful to

protel LIB 原理图库文件，包含常用元件及stc单片机元件图。-protel LIB