F04prelim1sol

F04prelim1sol - c LOW ENGRD 230 Midterm Answers...

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ENGRD 230 Green Prelim 1 Answers for Fall 2004 Problem 1: a. G = E*F = [A'+(B+C)]*[D'+(B+C)] b/c. Truth Table, K-Map, and Min Eq: 0000 011 1 0001 010 0 0010 111 1 0011 111 1 0100 111 1 1110 0101 111 1 0110 0110 111 1 1111 0111 111 1 1111 1000 001 0 1001 000 0 1010 111 1 G=(A*B'*C'+B'*C'D)' = B + C + (A'*D') 1011 111 1 1100 111 1 1101 111 1 1110 111 1 1111 111 1 Problem 2: 0000 FNFNFNFN 1 0001 FNFNFNNF 1 0010 FNFNNFFN 1 0011 FNFNNFNF 0 0100 FNNFFNFN 1 1101 0101 FNNFFNNF 1 1101 0110 FNNFNFFN 1 0000 0111 FNNFNFNF 0 1101 1000 NFFNFNFN 1 1001 NFFNFNNF 1 1010 NFFNNFFN 1 1011 NFFNNFNF 0 1100 NFNFFNFN 0 1101 NFNFFNNF 0 1110 NFNFNFFN 0 1111 NFNFNFNF 0 Two options: Z=(A*B+CD)', two ANDs feeding a NOR. Z=(A*B)'*(C*D)', two NANDs feeding an AND. Problem 3: a. I = 2.39 mA. b. V = 0.120 V.

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