程序经本人自己编写，调试通过。该程序基于AT89C52单片机的函数发生器程序，程序包含了ADC和双DAC模块，显示在数码管上，显示波形多样，显示频率带宽。-After I write your own program, debug through. The program is based on AT89C52 microcontroller function generator program, the program includes the ADC and dual DAC modules, shown in the digital pipe, showing various waveforms, showing the frequency bandwidth.