文档介绍：录目第二节协议的物理层·········································第三章智能压力变送器的软件设计·······························“···摘要································································弓言····························································第一章协议介绍························一····一一·“一一一一···第一节协议概述············································.第三节协议的数据链路层····································.第四节协议的应用层········································第五节协议的应用和发展····································第二章智能压力变送器的硬件设计····································第一节系统功能模块框图········································第二节超低功耗设计·····