digital-design digital-electronics question and answers -Page 4

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Digital Design problems

1. TTL requires a constant supply voltage of 8.0 V.
Options
A. True
B. False

Correct Answer: False

2. Pull-up resistors and pull-down resistors are used to keep a floating terminal HIGH.
Options
A. True
B. False

Correct Answer: False

3. The output of a phototransister is determined by the presence or absence of light at its base input.
Options
A. True
B. False

Correct Answer: True

4. The term race condition describes the time that an active signal must be present at the input to a flip-flop before an active clock edge is applied.
Options
A. True
B. False

Correct Answer: False

5. A transfer function graph illustrates the most important specifications for the Schmitt trigger devices.
Options
A. True
B. False

Correct Answer: True

6. There is no way to eliminate the effects of a switch bounce.
Options
A. True
B. False

Correct Answer: False

7. The 7805 will get very hot if your circuit draws more than 0.5 A.
Options
A. True
B. False

Correct Answer: True

8. The input levels to a flip-flop must be maintained for a minimum time period both before and after the edge of the clock signal is applied.
Options
A. True
B. False

Correct Answer: True

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