Digital Electronics - Signals and Switches

Exercise :: Signals and Switches - General Questions

31. 

What is the minimum voltage required before a diode will allow current to flow between the cathode and the anode?

A. 0.7 V
B. 0.07 V
C. 4.3 V
D. 0.2 V

Answer: Option A

Explanation:

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32. 

What is the advantage of using serial data transmission over parallel data transmission?

A. It is slower.
B. Only one pair of wires is required.
C. More people use it.
D. It is faster.

Answer: Option B

Explanation:

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33. 

A TTL totem-pole circuit is designed so that the output transistors:

A. are always on together
B. provide phase splitting
C. provide voltage regulation
D. are never on together

Answer: Option D

Explanation:

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34. 

What is the advantage of using CMOS logic over TTL?

A. It switches faster.
B. It uses less power.
C. It is larger.
D. cost

Answer: Option B

Explanation:

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35. 

What is used to graphically show the time relationship between two or more digital waveforms?

A. reference diagram
B. timing diagram
C. voltage curve
D. load line

Answer: Option B

Explanation:

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