The following figure shows a logic gate circuit with two inputs A and B and the output Y. The voltage waveforms of A, B and Y are given The logic gate is :

NAND gate NOR gate OR gate AND gate

NAND gate

From the given waveforms, the truth table is as follows.  A   B   Y  1 1 0 0 0 1 0 1 1 1 0 1 The above truth table is for NAND gate. Therefore, the logic gate is NAND gate.