Since the 1970s a microprocessor, the use of microprocessors, ADC and DACs, hardware and software to expand the functions of the signal generator, a more complex waveforms.

• 自从70年代微处理器出现以后，利用微处理器、模数转换器和数模转换器，硬件和软件使的功能扩大，产生比较复杂的波形。