| 1. | Several technologies researched and applied in research of the thesis which includes the technique of electric energy measurement , the remote and automatic reading meter , gprs , embedded system and remote update application in terminal . the system has advantage of execution efficiency , software cubage , and response speed and communication expense 终端系统的设计基于嵌入式系统,充分利用了嵌入式操作系统的多任务能力、模块可裁剪能力,嵌入式处理器的速度快、寻址能力强和资源丰富以及gprs网络永远在线、通信费用低廉等优势,在执行效率、代码体积、通信处理能力和经济效益上都有着强大的优势。 |