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文章介绍了全球卫星定位系统的接收模块ＧＰＳ２５的特性和功能。给出了利用ＧＰＳ２５模块和８７Ｃ５５２单片机构成的野外工作，用手持式卫星定时、定位仪的硬件原理电路和软件工作流程囹。文中还介绍了利用ＧＰＳ２５和笔记本电脑构成的可实时实地精确定时、定位的电子地质图及其工作原理和硬件接口电路。
This article describes the features and functions of GPS25, a receiver module of the Global Positioning System. Given the use of GPS25 module and 87C552 microcontroller field work, with a handheld satellite timing, locator hardware circuit and software work flow 囹. The article also describes the use of GPS25 and notebook computers can be composed of real-time real-time precise timing and positioning of the electronic geological map and its working principle and hardware interface circuit.