本程序采用的VHDL语言,分别实现:递增锯齿波递减锯齿波 三角波 阶梯波 方波正弦波 数据选择器.,This procedure used in VHDL language, respectively, to achieve: increased sawtooth ladder descending sawtooth wave square wave triangle wave sine wave data selector.

DDS用verilog 实现，可以实现方波、正弦和三角,DDS using verilog realized, can be square wave, sinusoidal and triangular