sp03-sw-s1 - ECE 2030 E 1:00pm 4 problems, 4 pages Problem...

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ECE 2030 E 1:00pm Computer Engineering Spring 2003 4 problems, 4 pages Exam One 5 February 2003 Problem 1 (3 parts, 27 points) Incomplete Circuits For each partial switch circuit below, complete the complementary switching network so the circuit contains no floats or short. Also write the Boolean expression computed by the completed circuit. Assume the inputs and their complements are available. A B C Out x E A B C E D D A D B Out y E C F A E D F Out z A B D C E E D C A B OUTx = D E C B A + + ) ( OUTy = ) ( ) ( F D E A + + OUTz = E D C B A + + ) 1
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ECE 2030 E 1:00pm Computer Engineering Spring 2003 4 problems, 4 pages Exam One 5 February 2003 Probl em 2 (3 parts, 29 points) Mixed Logic Reengineering A B C E F OUTx OUTy OUTz D Part A (9 points) Write the output expression for the gate design shown above. Also determine the number of switches used in its implementation. OUTx = B A + OUTy = E D C B A + + + OUTz = F E D + # switches = 3 * 6 + 1 * 8 + 4 * 2 = 34 switches Part B (10 points) Reimplement the behavior below with a mixed logic design style using only NOR gates and inverters. Determine the number of switches used in this implementation.
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sp03-sw-s1 - ECE 2030 E 1:00pm 4 problems, 4 pages Problem...

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