Logic Gates problems
- 1. The number of input combinations for a 4-input gate is ________.
Options- A. 9
- B. 8
- C. 15
- D. 16 Discuss
Correct Answer: 16
- 2. If A is LOW or B is LOW or BOTH are LOW, then X is LOW. If A is HIGH and B is HIGH, then X is HIGH. These rules specify the operation of a(n) ________.
Options- A. AND gate
- B. OR gate
- C. NAND gate
- D. XOR gate Discuss
Correct Answer: AND gate
- 3. A 2-input gate that can be used to pass a digital waveform unchanged at certain times and inverted at other times is a(n) ________.
Options- A. AND gate
- B. OR gate
- C. NAND gate
- D. XOR gate Discuss
Correct Answer: XOR gate
- 4. The output of an XOR gate is HIGH only when ________.
Options- A. both inputs = 0
- B. both inputs = 1
- C. the two inputs are unequal
- D. both inputs are undefined Discuss
Correct Answer: the two inputs are unequal
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