Extra exam question E7A06

WhyA monostable multivibrator switches temporarily to an alternate state for a set time. A monostable multivibrator's defining characteristic is that it switches temporarily to an alternate output state for a fixed, predetermined time and then automatically returns to its normal resting state, useful for generating a single timed pulse, answer A. It doesn't produce a continuous square wave (that's an astable multivibrator), doesn't store a bit of data (that's a flip-flop or latch), and doesn't maintain a constant output voltage regardless of input, that's a voltage regulator's job.