PPT教程，以MCS—51单片机为主线,从实用角度出发,,内容包括单片机的基本知识、MCS-51系列单片机的组成结构、MCS-51系列单片机的指令系统、MCS-51单片机的I/O应用-PPT tutorial, MCS- 51 single chip microcomputer as the main line, from a practical perspective, and includes basic knowledge of single chip microcomputers, the constitution structure of MCS- 51 series microcontroller, MCS- 51 series microcontroller instruction system, MCS- 51 MCU I/O application and so on