用VB程序做的一个GPS卫星定位程序,能根据时刻来计算卫星所在的位置-VB program to do a GPS satellite positioning program, depending on the time to calculate the position of the satellite

vb.net编写的GPS程序 能监控PLC内部寄存器的内容。很好用的哦。-vb.net prepared by the GPS program to monitor the contents of internal registers PLC. Oh well.