Discussion
Which of the following gates is described by the expression \( \overline{A} + \overline{B} \)?
Answer: D
Correct answer: NAND
By De Morgan's law \( \overline{A}+\overline{B} = \overline{A\cdot B} \), which is the NAND function. It is the expression for a NAND written with the inversion pushed inwards onto the variables.
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