Digital Design - General Questions (4)

Directions to Solve

25.

A Schmitt trigger has V_T+ = 2.0 V and V_T– = 1.2 V. What is the hysteresis voltage of the Schmitt trigger?

Answer: Option C

Explanation:

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26.

An optocoupler is an integrated circuit with an LED and a zener diode encased in the same package.

A.	True
B.	False

Answer: Option B

Explanation:

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27.

Why would a delay gate be needed for a digital circuit?

A.	A delay gate is never needed.
B.	to provide for setup times
C.	to provide for hold times
D.	to provide for setup times and hold times

Answer: Option D

Explanation:

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28.

The ________ circuit overcomes the problem of switching caused by jitter on the inputs.

Answer: Option D

Explanation:

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