本设计中应用硬件描述语言Verilog HDL描述相位累加器，相位调制器，正弦波、方波、三角波、心电波形四个独立的波形存储器，并描述频率控制、相位控字、幅度控制单元及波形切换等相关的功能单元。-Application of the design described in Verilog HDL hardware descr iption language phase accumulator, phase modulator, sine, square, triangle wave, the four independent ECG waveform memory, and describe the frequency control, phase control word, control unit and the waveform amplitude switching and other related functional units.