用PIC16F877A控制GSM实现短信的远程控制。因不同GSM模块AT指令集有不同，所以有时需要稍作改动。-PIC16F877A control of SMS with GSM remote control. Due to different GSM module AT commands are different, so sometimes require some changes.

sim300 的短信收发程序代码,可根据要求发送数据信息-The messaging program code sim300