However, if we put the change-over properties of the flip-flop into a jingle, draw some relevant simple diagrams of the flip ? flop, or give the relation between the R, S and J, K, Qn, we can solve the problems effectively and successfully.

• 采用顺口溜来记忆触发器翻转特性,从RS触发器出发,画出简化图,写出R,S与J,K,Qn的关系,可以有效地使这些难点变得较易理解和掌握。