用AD9834做的信号源。用nokia5110液晶显示，四个独立按键可设置频率，输出波形，及幅度增益。增益是通过DA控制AD603对AD9834的输出进行程控放大。界面效果好。程序模块化，方便移植，学习。-AD9834 to do with the signal source. With nokia5110 LCD, four buttons can be set independent of frequency, the output waveform, and amplitude gain.