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- Question
A clock signal with a period of 1 µs is applied to the input of an enable gate. The output must contain six pulses. How long must the enable pulse be active?
Options- A. Enable must be active for 0 µs.
- B. Enable must be active for 3 µs.
- C. Enable must be active for 6 µs.
- D. Enable must be active for 12 µs.
- Correct Answer
- Enable must be active for 6 µs.
- 1. How many pins does the 4049 IC have?
Options- A. 14
- B. 16
- C. 18
- D. 20 Discuss
- 2. How many AND gates are found in a 7411 IC?
Options- A. 1
- B. 2
- C. 3
- D. 4 Discuss
- 3. What are the pin numbers of the outputs of the gates in a 7432 IC?
Options- A. 3, 6, 10, and 13
- B. 1, 4, 10, and 13
- C. 3, 6, 8, and 11
- D. 1, 4, 8, and 11 Discuss
- 4. A 2-input NOR gate is equivalent to a ________.
Options- A. negative-OR gate
- B. negative-AND gate
- C. negative-NAND gate
- D. none of the above Discuss
- 5. The terms "low speed" and "high speed," applied to logic circuits, refer to the ________.
Options- A. rise time
- B. fall time
- C. propagation delay time
- D. clock speed Discuss
- 6. The logic expression for a NOR gate is ________.
Options- A.
- B.
- C.
- D.
Discuss
- 7. What is the difference between a 7400 and a 7411 IC?
Options- A. 7400 has two four-input NAND gates; 7411 has three three-input AND gates
- B. 7400 has four two-input NAND gates; 7411 has three three-input AND gates
- C. 7400 has two four-input AND gates; 7411 has three three-input NAND gates
- D. 7400 has four two-input AND gates; 7411 has three three-input NAND gates Discuss
- 8. How many input combinations would a truth table have for a six-input AND gate?
Options- A. 32
- B. 48
- C. 64
- D. 128 Discuss
- 9. The output of a NOT gate is HIGH when ________.
Options- A. the input is LOW
- B. the input is HIGH
- C. power is applied to the gate's IC
- D. power is removed from the gate's IC Discuss
- 10. TTL operates from a ________.
Options- A. 9-volt supply
- B. 3-volt supply
- C. 12-volt supply
- D. 5-volt supply Discuss
Logic Gates problems
Search Results
Correct Answer: 16
Correct Answer: 3
Correct Answer: 3, 6, 8, and 11
Correct Answer: negative-AND gate
Correct Answer: propagation delay time
Correct Answer:
Correct Answer: 7400 has four two-input NAND gates; 7411 has three three-input AND gates
Correct Answer: 64
Correct Answer: the input is LOW
Correct Answer: 5-volt supply
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