MC75的USB驱动，安装后可以把MC75的USB添加为一个串口，进行AT命令收发。同时会生成一个modem，可以直接用它拨号。,The USB driver MC75, MC75 after installation of the USB can be added as a serial port for AT commands to send and receive. At the same time will generate a modem, can directly use it to

GPRS通讯电路的主要构成，GPRS模块的控制接口和AT命令的使用！-GPRS communication circuit main components, GPRS module AT command control interface and use!