单片机各种总线介绍。全面介绍了各种总线接口及其一些使用方法，有了他，就不用再去网上找其他资料了，有图片，直观真实-Introduction of single-chip bus. Comprehensive descr iption of the various bus interfaces and some of its use, with him, do not go online to find other information, and there are pictures, intuitive real