MCQ
The combination of gates shown below yields
  • A
    $NAND$ gate
  • $OR$ gate
  • C
    $NOT$ gate
  • D
    $XOR $ gate

Answer

Correct option: B.
$OR$ gate
b
The final boolean expression is,

$X=(\overline{\bar{A}+\bar{B}})=\bar{\bar{\underset{\scriptscriptstyle\centerdot}{A}}}\cdot \bar{\bar{B}}=A+B\,\Rightarrow $ $OR$ gate

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