Physics Question on Semiconductor electronics: materials, devices and simple circuits

Question

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 as given. The logic gate is

Answer 1

Solution

It is clear from the given logic circuit, that the 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