“电子技术应用”1981年第二期发表了吴有结等同志写的“用数字微分电路提取脉冲信号变化沿信息”一文,文中提出用两只D触发器及一些门电路的组合来提取脉冲信号变化沿信息。本人认为,如果采用异或电路的话,线路更为简单可靠。 “The application of electronic technology” in 1981 the second issue of Wu Youjie and other comrades, “the use of digital differential circuit to extract changes in the pulse signal edge,” a text, the paper proposed the use of two D flip-flop and some combination of gate to extract the pulse Signal changes along the information. In my opinion, if the use of XOR circuits, the circuit is more simple and reliable.