GPRS短信模块，有对GSM类进行封装，方便大家直接调用。-GPRS SMS module, there are classes for GSM package, to facilitate direct calls.

QT/C++开发的，统一的模拟量输出模块代码，非常不错，封装好的类库。(QT/c + + development, unified the analog output module of code, very good, good to libraries.)