Question: Implement the expression x = (A + B)(C + D) using OR and AND gates. Then implement the expression using only NOR gates by converting

Implement the expression x = (A + B)(C + D) using OR and AND gates. Then implement the expression using only NOR gates by converting each OR and AND gate to its NOR implementation from Figure 3-30. Which circuit is more efficient?

Figure 3-30

A B A B D x=A+A=A 2 A+B Da 100 B (a) (b) (c) 2 3 A+B x=A+B=AB A B A B INVERTER OR AND A A+B AB

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