(Word Problem) Consider the following logic unit. It has three operation inputs (A, B, C), two data inputs (D1, D0), and a single output (Z). The logic unit is defined as follows: when ABC = 000, Z = 0; ABC = 001, Z = D0; ABC = 010, Z = D1 AND D0; ABC = 011, Z = D1 NAND D0; ABC = 100, Z = D1 NOR D0; ABC = 101, Z = D1 OR D0; ABC = 110, Z = D1; ABC = 111, Z = 1.
(a) Implement to obtain a minimized implementation using the K-map method [Note: This uses 5 variables!).
(b) Implement using a 16:1 MUX (use A,B,C,D1 as your MUX control inputs).
(c) Implement using an 8:1 MUX plus whatever additional gate logic you need (use A,B,C as your MUX control inputs).
(d) Which implementation is “best”? Why?
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