COMEDK2021PhysicsSemiconductors
Find the logic gate, when both the inputs are high but the output is low and vice-versa.
Options
- AAND
- BOR
- CNAND
- DNOR
Correct answer
C. NAND
Step-by-step solution
The logic gate described has the following truth table behavior: When both inputs are high (1, 1), the output is low (0). When both inputs are low (0, 0), the output is high (1). This behavior corresponds to the NAND gate, which is the complement of the AND gate. The truth table for a NAND gate is as follows: Input A Input B Output 0 0 1 0 1 1 1 0 1 1 1 0 Since the output is low only when both inputs are high, and high otherwise, it matches the definition of a NAND gate. Answer: NAND