If $\mathrm { a } , \mathrm { b } , \mathrm { c } , \mathrm { d }$ are inputs to a gate and x is its output, then, as per the following time graph, the gate is: (1) OR (2) NAND (3) NOT (4) AND
If $\mathrm { a } , \mathrm { b } , \mathrm { c } , \mathrm { d }$ are inputs to a gate and x is its output, then, as per the following time graph, the gate is:
(1) OR
(2) NAND
(3) NOT
(4) AND