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Home ‣ Digital Electronics ‣ Logic Families and Their Characteristics See What Others Are Saying!
- Question
The high input impedance of MOSFETs:
Options- A. allows faster switching
- B. reduces input current and power dissipation
- C. prevents dense packing
- D. creates low-noise reactions
- Correct Answer
- reduces input current and power dissipation
- 1. The delay between a change on the digital input of a DAC and the appearance of the change on the output is called settling time.
Options- A. True
- B. False Discuss
- 2. An invalid condition in the operation of an active-HIGH input S-R latch occurs when ________.
Options- A. HIGHs are applied simultaneously to both inputs S and R
- B. LOWs are applied simultaneously to both inputs S and R
- C. a LOW is applied to the S input while a HIGH is applied to the R input
- D. a HIGH is applied to the S input while a LOW is applied to the R input Discuss
- 3. The term buffer/driver signifies the ability to provide low output currents to drive light loads.
Options- A. True
- B. False Discuss
- 4. The time needed for an output to change from the result of an input change is known as:
Options- A. noise immunity
- B. fan-out
- C. propagation delay
- D. rise time Discuss
- 5. Why are the maximum value of VOL and the minimum value of VOH used to determine the noise margin rather than the typical values for these parameters?
Options- A. These are worst-case conditions.
- B. These are normal conditions.
- C. These are best-case conditions.
- D. It doesn't matter what values are used. Discuss
- 6. Which of the following is correct for a gated D flip-flop?
Options- A. The output toggles if one of the inputs is held HIGH.
- B. Only one of the inputs can be HIGH at a time.
- C. The output complement follows the input when enabled.
- D. Q output follows the input D when the enable is HIGH. Discuss
- 7. Data transfer from I/O to external data memory can only be done with the MOV command.
Options- A. True
- B. False Discuss
- 8. A 64-bit word consists of ________.
Options- A. 4 bytes
- B. 8 bytes
- C. 10 bytes
- D. 12 bytes Discuss
- 9. What is the difference between a 7490 and a 7492?
Options- A. 7490 is a MOD-12, 7492 is a MOD-10
- B. 7490 is a MOD-12, 7492 is a MOD-16
- C. 7490 is a MOD-16, 7492 is a MOD-10
- D. 7490 is a MOD-10, 7492 is a MOD-12 Discuss
- 10. A data acquisition system may communicate via two common buses: the data bus and the control bus.
Options- A. True
- B. False Discuss
More questions
Correct Answer: True
Correct Answer: HIGHs are applied simultaneously to both inputs S and R
Correct Answer: False
Correct Answer: propagation delay
Correct Answer: These are worst-case conditions.
Correct Answer: Q output follows the input D when the enable is HIGH.
Correct Answer: False
Correct Answer: 8 bytes
Correct Answer: 7490 is a MOD-10, 7492 is a MOD-12
Correct Answer: True
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