本文叙述了用触发器的跳变方程分析计数电路的原理和方法。这种方法具有较严格的逻辑运算,因此使计数电路的分析简单而可靠。 分析计数电路就是要找出该电路的主循环环路,确定它的计数周期,并检查计数电路是否有“死循环”或“死状态”,即检查电路是否有自校准功能。如果出现“死循环”或“死状态”,必须设法排除。 This article describes the principle and method of counting circuit with flip-flop equation of transition. This method has more stringent logic operations, so the counting circuit analysis is simple and reliable. Analysis and counting circuit is to find out the main loop of the circuit, to determine the counting cycle, and check whether the count circuit “dead cycle” or “dead state”, that is, check whether the circuit self-calibration function. If an “endless loop” or “dead state” occurs, you must try to exclude it.