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 the output `Y` are as given

Options

A. NOR gate
B. OR gate
C. AND gate
D. NAND gate

Answer

D

Explanation

It is clear from given logic circuit, that output Y is low when both the inputs are high, otherwise it is high. Thus, logic circuit is NAND gate.
`|{:(A,B,Y),(1,1,0),(0,0,1),(0,1,1),(1,0,1):}|`