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14. Semicondutor electronics — Physics STD 12 Science — Question

CBSE BoardEnglish MediumSTD 12 SciencePhysics14. Semicondutor electronics1 Mark
MCQ
Which of the following Boolean expression is not correct
  • A
    $\overline {\bar A.\bar B}  = A + B$
  • B
    $\overline {\bar A + \bar B}  = A.B$
  • C
    $\overline{\overline {A.B}}  = A.B$
  • ✓
    $\bar 1 + \bar 1 = 1$
✓

Answer

Correct option: D.
$\bar 1 + \bar 1 = 1$
d

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