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- Question
The output of a NOR gate is HIGH if ________.
Options- A. all inputs are HIGH
- B. any input is HIGH
- C. any input is LOW
- D. all inputs are LOW
- Correct Answer
- all inputs are LOW
- 1. If a 3-input OR gate has eight input possibilities, how many of those possibilities will result in a HIGH output?
Options- A. 1
- B. 2
- C. 7
- D. 8 Discuss
- 2. Fan-out is specified in terms of ________.
Options- A. voltage
- B. current
- C. wattage
- D. unit loads Discuss
- 3. TTL operates from a ________.
Options- A. 9-volt supply
- B. 3-volt supply
- C. 12-volt supply
- D. 5-volt supply Discuss
- 4. 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
- 5. 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
- 6. The AND function can be used to ________ and the OR function can be used to ________ .
Options- A. enable, disable
- B. disable, enable
- C. enable or disable, enable or disable
- D. detect, invert Discuss
- 7. What is the circuit number of the IC that contains four two-input AND gates in standard TTL?
Options- A. 7402
- B. 7404
- C. 7408
- D. 7432 Discuss
- 8. A logic probe is placed on the output of a gate and the display indicator is dim. A pulser is used on each of the input terminals, but the output indication does not change. What is wrong?
Options- A. The dim indication on the logic probe indicates that the supply voltage is probably low.
- B. The output of the gate appears to be open.
- C. The dim indication is the result of a bad ground connection on the logic probe.
- D. The gate is a tristate device. Discuss
- 9. What is the Boolean expression for a three-input AND gate?
Options- A. X = A + B + C
- B. X = A · B · C
- C. A ? B ? C
- D. A $ B $ C Discuss
- 10. Write the Boolean expression for an inverter logic gate with input C and output Y.
Options- A. Y = C
- B. Y =
Discuss
Logic Gates problems
Search Results
Correct Answer: 7
Correct Answer: unit loads
Correct Answer: 5-volt supply
Correct Answer: the input is LOW
Correct Answer: 64
Correct Answer: enable or disable, enable or disable
Correct Answer: 7408
Correct Answer: The output of the gate appears to be open.
Correct Answer: X = A · B · C
Correct Answer: Y =
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