Monostable
(重定向自Monostable Multivibrator)
A monostable multivibrator is an electronic circuit that generates an output pulse. When triggered, a pulse of pre-defined duration is produced. The circuit then returns to its quiescent state and produces no more output until triggered again.
Monostables may be considered as a biased form of multivibrator where it is stable in one state until triggered, then unstable and will return of its own accord.