5、waveform,suchassinewaveform,trianglewaveform,squarewaveform,theteethofsawwaveformandsoon.Theamplitudeofsignalgeneratedbygeneratorcanbeadjustedcontinuously.Thissystemcanbeusednotonlyinteachingexperimentsbutalsoasbasicsignal—generatingequipment.Itisveryusefulindifferentareasinreality. Ke