Applications: pulse stretching, time delay, and one-shot pulse generation — which multivibrator is best? Select the multivibrator type commonly used for these three tasks.

Introduction / Context:
Different multivibrator types serve distinct timing roles. This question checks recognition of which topology naturally performs pulse stretching, time-delay creation, and single-pulse generation after a trigger.

Given Data / Assumptions:

• Goal: extend a pulse, insert a delay, or generate a one-shot pulse
• Available choices: astable, monostable, multistable, bistable, Schmitt trigger

Concept / Approach:
A monostable multivibrator (one-shot) produces a single output pulse of controlled width in response to a trigger. By choosing R and C, you implement pulse stretching and time delays without continuous oscillation.

Step-by-Step Solution:

Verification / Alternative check:
Astable oscillators run continuously, which is unnecessary for one-shot tasks. Bistables store state but do not time a pulse width. Schmitt trigger shapes edges but does not create timed widths by itself.

Why Other Options Are Wrong:

• Astable: produces a free-running square wave.
• Multistable: generic term, not a standard timing choice here.
• Bistable: latches a state but needs extra timing to form a pulse.
• Schmitt trigger: adds hysteresis for clean switching, not timing width control.

Common Pitfalls:

• Assuming any RC with a comparator equals a monostable; the one-shot topology matters.

Final Answer:
monostable