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The output of an AND gate with three inputs, A, B and C, is HIGH when ______.
  • a)
    A = 1, B = 1, C = 0
  • b)
    A = 0, B = 0, C = 0
  • c)
    A = 1, B = 1, C = 1
  • d)
    A = 1, B = 0, C = 1
Correct answer is option 'C'. Can you explain this answer?
Verified Answer
The output of an AND gate with three inputs, A, B and C, is HIGH when...
The truth table of three input AND gate is shown:
Inputs Output
0 0 0 0
0 0 1 0
0 1 0 0
0 1 1 0
1 0 0 0
1 0 1 0
1 1 0 0
1 1 1 1
The Output is high only when all the inputs are high
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The output of an AND gate with three inputs, A, B and C, is HIGH when...
Understanding the AND Gate Functionality
An AND gate is a basic digital logic gate that operates on multiple binary inputs. Its function is straightforward: the output is HIGH (1) only when all inputs are HIGH (1).

Three-Input AND Gate
For a three-input AND gate, denoted as A, B, and C, the output will be HIGH only under specific conditions:

Output Conditions
- The output is HIGH (1) when:
- A = 1, B = 1, C = 1
This means that every input must be true (1) for the output to be true (1).

Evaluation of Given Options
Let’s examine the provided options:
- **Option a:** A = 1, B = 1, C = 0
- **Output:** LOW (0) because C is not HIGH.
- **Option b:** A = 0, B = 0, C = 0
- **Output:** LOW (0) as all inputs are LOW.
- **Option c:** A = 1, B = 1, C = 1
- **Output:** HIGH (1) since all inputs are HIGH.
- **Option d:** A = 1, B = 0, C = 1
- **Output:** LOW (0) because B is not HIGH.

Conclusion
Thus, the only situation where the AND gate gives a HIGH output is when all three inputs A, B, and C are HIGH, which corresponds to option **C** (A = 1, B = 1, C = 1).
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The output of an AND gate with three inputs, A, B and C, is HIGH when ______.a)A = 1, B = 1, C = 0b)A = 0, B = 0, C = 0c)A = 1, B = 1, C = 1d)A = 1, B = 0, C = 1Correct answer is option 'C'. Can you explain this answer?
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