By the method of looking up table, the sinusoidalsignal can produce little periodic signal, which is difficult for the previous signal generators.
正弦信号采用查表的方法,解决了以往信号发生器无法产生小周期正弦信号的难题。
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This design construct an sinusoidalsignal generator based on DDS(Direct Digital Frequency Synthesis), completed by MCU AT89S52 and necessary analog circuit.