JEE MainPhysicsSemiconductors
The logic states of two inputs A and B, along with the corresponding output Y of a logic gate over six consecutive time intervals, are given in the table below: Time Interval t₁ t₂ t₃ t₄ t₅ t₆ Input A 0 1 1 0 0 1 Input B 0 0 1 1 0 0 Output Y 1 0 0 0 1 0 Identify the logic gate.
Options
- ANAND gate
- BOR gate
- CAND gate
- DNOR gate
Correct answer
D. NOR gate
Step-by-step solution
From the given table, we can extract the truth table of the logic gate by observing the output for different input combinations. When A = 0, B = 0 , the output is Y = 1 . When A = 1, B = 0 , the output is Y = 0 . When A = 1, B = 1 , the output is Y = 0 . When A = 0, B = 1 , the output is Y = 0 . The output Y is 1 only when both inputs are 0 . For all other combinations of inputs, the output is 0 . This exactly matches the truth table of a NOR gate. Answer: NOR gate