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## GR0877 Problem 48

PROBLEM STATEMENT: This problem is still being typed.

SOLUTION: (C) We have one NOR-gate with two inverted inputs, one AND-gate and one NAND-gate (you should remember this from your electrical engineering course to solve this problem). For NOR-gate with inverted inputs the output is $\overline{\overline{A} + \overline{B}}$, for NAND-gate $\overline{C \cdot D}$. Thus, $E = \overline{\overline{A} + \overline{B}} \cdot \overline{C \cdot D}$.

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