applications of monostable multivibrator
A monostable is a circuit that will respond to a stimuli only once and only for a period. Its usage can be many depends of applications

we can use monostable multivibrator.But generally its o/p is a square wave so to get a pulse type waveform,we may use differentiator after monostable multivibrator....

how can we modify the monostable multivibrator to obtain triangular wave generator

it is used for square wave generation.\

ANSWER: Never monostable is a once fire will never toggle again. Meaning it will work once and never again not until a stimuli is present again.

there AS-TABLE oscillators and monostable

Basically Monostable is a a mode in which a 555 timer produces a single pulse for a preset amount of time in response to an input.