众所周知,对于一个逻辑系统而言,脉冲沿的抖动客观上起了某种信频的作用,所以它常使触发器,计数器,移位寄存器等锁定式器件工作失常。麻烦的是,这类故障往往难以寻找。因为抖动的频率经常很高,时间范围也很小,用示波器不易显示。为此, It is well-known that for a logic system, jitter on the edge of the pulse is objectively a kind of frequency-dependent signal, so it often causes malfunctioning of the lock-in devices such as flip-flops, counters, shift registers and the like. The trouble is that such failures are often hard to find. Because the frequency of jitter is often high, the time range is also very small, with the oscilloscope is not easy to display. to this end,