MAEMO系统上QT4作为界面（GUI）开发工具，包括电话簿管理，通话记录管理等多个模块。使用目前嵌入式中流行的小巧但功能强大的数据库SQLITE3 -MAEMO system QT4 as interface (GUI) development tools, including phone book management, call records management and other modules. Embedded in current popular use of small

用C 写的 ASK， FSK， PSK， QAM 数字调制技术模拟，画出了调制后的信号，GUI 界面操作-a simulation about ASK, FSK, PSK AND QAM modulation, GUI interface is used for operation.

DTMF的数据fft分析，每个键值的波形和频谱都有显示，有GUI界面-DTMF data fft analysis, waveform and spectrum of each key has revealed that there is a GUI interface

循环编码，校验子译码，梅吉特译码，GUI界面设计。程序完整，可以良好运行，注释清晰。-Cyclic codes, check subdecode, Meggitt decoder, GUI interface design. Integrity of the process, you can run a good, clear notes