说明：  初学者学习51的很好参考文档。 80C51 以及广大的51 系列单片机的书这本书介绍给读者一些新的技术使你的8051 工程和开发过程变得简单请注意这本书的目的可不是教你各种8051 嵌入式系统的解决方法
(51 beginner to learn a good reference documentation. 80C51 as well as the majority of the book of 51 series of microcontrollers introduced to the reader of this book some of the new technology to make your 8051 project and the development process easier Please note that this is not the purpose of this book teach you a variety of embedded system solutions 8051)