GPS车辆描点程序，数据回放部分，用VB编写，功能正在增加，后续版本编写后放上。-GPS vehicle tracing point procedures, data replay part of the preparation using VB, function is increasing, placed after the preparation of follow-up version.

gps 模拟程序可以模拟gps工作，发送数据及接收数据。-a GPS simulation program can simulate a GPS, send data and receive data.