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Question

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

The given electrical network is equivalent to :

A

OR gate

B

NOR gate

C

NOT gate

D

AND gate

Answer

NOR gate

Explanation

Solution

y1=A+B‾y_1 = \overline{A + B}
y2=y1+y1‾=y1‾=A+B‾‾=A+By_2 = \overline{y_1 + y_1} = \overline{y_1} = \overline{\overline{A + B}} = A + B
y=y2‾=A+B‾y = \overline{y_2} = \overline{A + B}