专用DDS芯片AD9851产生正弦波，频率相位可调，并可以产生扫频信号-Dedicated DDS chip AD9851 produced sine wave, frequency, phase-adjustable, and can generate sweep signal

用LM3S1138来控制DDS芯片ad9850产生扫频波信号，修改程序中的控制字可调整扫频波的分辨率。-With the LM3S1138 to control the DDS chip ad9850 sweep wave signal generated, modify the program control word adjustable sweep wave resolution.

利用C8051F040单片机和AD9850产生扫频信号，经测试，输出扫频信号稳定。欢迎下载！-Use C8051F040 microcontroller and AD9850 sweep signal generated by the test, the output sweep signal stability. Welcome to download!