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Question

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

The given combination will work as:

A

NAND Gate

B

OR Gate

C

AND Gate

D

NOR Gate

Answer

AND Gate

Explanation

Solution

According to the given circuit,
Y1=A⋅B‾Y_{1} =\overline{A\cdot B}
Y=(A⋅B‾)⋅(A⋅B‾)‾Y = \overline{(\overline{A\cdot B})\cdot (\overline{A\cdot B})}
From De Morgan's law,
Y=AB‾‾+AB‾‾=AB‾‾Y = \overline{\overline{AB}}{+}\overline{\overline{AB}}{=}\overline{\overline{AB}}
Y = AB