名词解释：

It is a circuit that produces an output value of 0 or 1 that remains constant until a temporary pulse (a temporary change to a 1 that returns to 0) from another circuit causes it to shift to the other value. In other word, the output will flip or flop between two values under control of external stimuli.

2.夹脚拖.因为flip-flop连续啪啪作声的意思,刚好跟夹脚拖走路时发出的声响一样.所以常用来泛指夹脚拖.

Flip-flopsaresimple type of footwear in which there is a band between the biggest toe and the other toes.