信号发生器是一种常用的仪器，能够实现各种波形，不同频率的输出，电子测试系统的重要部件。本研究

的数字信号发生器足基于直接数字合成即DDS技术设计的，采用VHDL与C语言相结合的方法，通过查找存储

于ROM查找表中的各种标准波形数据，产牛频率Hf调并且高精度的正弦波、方波、锯齿波等常用信号，并且町

以通过修改表中的数据，实现任意信号发生器-Signal generator is a commonly used instrument to achieve a variety of waveforms of different frequency output, a key component of electronic test systems. In this study, full digital signal generator that is based on DDS technology of direct digital synthesis design, VHDL and C language using the method of combining, by looking up stored in ROM look-up table in a variety of standard waveform data, the cattle and the high frequency tone Hf accuracy of the sine wave, square wave, sawtooth and other signals used, and town to modify table data, an arbitrary signal generator