51系列芯片嵌入式系统介绍，总线结构，从硬件，软件上详细阐述51系列工作原理以及开发步骤，开发环境，寻址方式，系统指令，是一本非常优秀的51系列芯片的入门及开发教程。-51 series micro-controller development manual. Inside this book, it gives you the detailed struscture of C51 chips, bus structure, describe the chips thoroughly from both hardware and software side.From which, you are able to be a expert of C51 develop engineer.