本文从整体上研究了嵌入式系统的组成、讨论了嵌入式处理器和嵌入式

Li加x操作系统所具有的优势。在此基础上，分析了一款具体的嵌入式信息设

备一数字机顶盒系统的特点、体系结构、关键技术，以及开发平台的搭建和程

序调试方法。

-This paper studies the overall composition of the embedded system, embedded processors and embedded discussed Li x operating system plus the advantages. On this basis, a detailed analysis of the embedded information device features a digital set-top box systems, architecture, key technologies, and development platform for building and debugging methods.