上位机系统与单片机下位机的在线通信控制程序，内有源码以及原理图-Single-chip host computer system and the lower machine online communication control

gps导航的开发实例，其中只有上位机部分，下位机部分在我上传的其他资料里，其中包括了定位，显示等功能。-gps navigation development examples, of which only the host computer part, lower machine part where I upload additional information, including the location, display and other functions.

gps导航的开发实例，其中只有下位机部分，上位机部分在我上传的其他资料里，其中包括了定位，显示等功能。-gps navigation development examples, of which only lower machine part, the PC part where I upload additional information, including the location, display and other functions.