多功能波形发生器VHDL程序与仿真.实现4种常见波形正弦、三角、锯齿、方波（A、B）的频率、幅度可控输出（方波A的占空比也是可控的），可以存储任意波形特征数据并能重现该波形，还可完成各种波形的线形叠加输出。

-Multi-function waveform generator and simulation of VHDL procedures. The realization of four kinds of common sine wave, triangle, sawtooth, square wave (A, B) the frequency and magnitude of control output (square wave of duty cycle A is controllable), Arbitrary Waveform characteristics can store data and can reproduce the waveform, but also the completion of the linear superposition of a variety of output waveforms.