电子通信资料，SIM300C为一款常用的GPRS通信芯片，通信格式为AT指令，可以方便的使用C语言实现，应用单片机，ARM等实现数据无线传输-Electronic communications data, SIM300C commonly used as a GPRS communication chips, communications format for the AT command, you can use C language to facilitate the realization