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  4. The combination of gates shown below yields <img class=img-fluid question-image alt=Question src=https://cdn.tardigrade.in/q/nta/p-joz6nt7c5gxe.png />

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Q. The combination of gates shown below yields

Question

NTA AbhyasNTA Abhyas 2020Semiconductor Electronics: Materials Devices and Simple Circuits

Solution:

The final boolean expression is,
$X=\overline{(\bar{A} \cdot \bar{B})}=\bar{A}+\bar{B}=A+B \Rightarrow $ OR gate