A monostable multivibrator is commonly called a two shot.

A multivibrator is a circuit that changes between two digital levels on a continuous, free-running basis or on demand.

Timing accuracy of more than eight significant digits can be easily achieved by using quartz crystals.

When the 74123, a retriggerable monostable multivibrator device, ends its timing cycle it must be started all over again.

The bistable multivibrator is an R-C flip-flop.