该工程是利用51单片机控制AD9850产生正弦波，频率可用4*4矩阵键盘预置，输出频率范围0hz——25Mhz，波形输出稳定。-The project is the use of 51 SCM AD9850 generates sine wave frequency can be 4* 4 matrix keyboard presets, output frequency range 0hz- 25Mhz, waveform output stability.