A waveform generator for Mossbauer specbometers based on 8751 single chip microcomputer is described. The reference waveform with high linearity is generated with a 12 bit DAC
and itS amplitude is controlled with a 8 bit DAC. Because the channel advance and synchronous signals can be delaied arbityarily
excellent folded spectta can be acquired.This waveform generator can be controlled with DIP switches on faceplate or series interface of the IBM-PC microcomputer.