Logic Gates problems
- 1. If a signal passing through a gate is inhibited by sending a low into one of the inputs, and the output is HIGH, the gate is a(n):
Options- A. AND
- B. NAND
- C. NOR
- D. OR Discuss
Correct Answer: NAND
- 2. How many NAND circuits are contained in a 7400 NAND IC?
Options- A. 1
- B. 2
- C. 4
- D. 8 Discuss
Correct Answer: 4
- 3. How many truth table entries are necessary for a four-input circuit?
Options- A. 4
- B. 8
- C. 12
- D. 16 Discuss
Correct Answer: 16
- 4. A NAND gate has:
Options- A. LOW inputs and a LOW output
- B. HIGH inputs and a HIGH output
- C. LOW inputs and a HIGH output
- D. None of the these Discuss
Correct Answer: LOW inputs and a HIGH output
- 5. The basic logic gate whose output is the complement of the input is the:
Options- A. OR gate
- B. AND gate
- C. INVERTER gate
- D. comparator Discuss
Correct Answer: INVERTER gate
- 6. Exclusive-OR (XOR) logic gates can be constructed from what other logic gates?
Options- A. OR gates only
- B. AND gates and NOT gates
- C. AND gates, OR gates, and NOT gates
- D. OR gates and NOT gates Discuss
Correct Answer: AND gates, OR gates, and NOT gates
- 7. A single transistor can be used to build which of the following digital logic gates?
Options- A. AND gates
- B. OR gates
- C. NOT gates
- D. NAND gates Discuss
Correct Answer: NOT gates
- 8. The logic gate that will have HIGH or "1" at its output when any one of its inputs is HIGH is a(n):
Options- A. OR gate
- B. AND gate
- C. NOR gate
- D. NOT gate Discuss
Correct Answer: OR gate
- 9. What input values will cause an AND logic gate to produce a HIGH output?
Options- A. At least one input is HIGH.
- B. At least one input is LOW.
- C. All inputs are HIGH.
- D. All inputs are LOW. Discuss
Correct Answer: All inputs are HIGH.
- 10. The output will be a LOW for any case when one or more inputs are zero in a(n):
Options- A. OR gate
- B. NOT gate
- C. AND gate
- D. NAND gate Discuss
Correct Answer: AND gate
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