通过串口控制SIM300收发中英文短信，完成测试可以帮助完成MCU控制程序。过程详细，亲测可用。-Through the serial port control SIM300 receive text messages in English to complete the tests can help complete the MCU control procedures. The process in detail, the pro-test is available.

八优短信接口 VB 源程序，方便实用，亲测可用。-The eight distinctions SMS interface VB source, convenient and practical.

MC52iR3发短信AT指令C语言程序,完整亲测可用。-This is the program about how to send SMS by MC52iR3 in C language.