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sp99-sw-e1

# sp99-sw-e1 - ECE 2030 4 problems 5 pages Computer...

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ECE 2030 Computer Engineering Spring 1999 4 problems, 5 pages Exam One 16 April 1999 1 1 2 3 4 total 30 20 18 32 100

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ECE 2030 Computer Engineering Spring 1999 4 problems, 5 pages Exam One 16 April 1999 2 Problem 1 (3 parts, 30 points) Incomplete Circuits Several incomplete circuits are shown below. Complete each circuit by adding the needed switching network so the output is pulled high or low for all combinations of inputs (i.e., no floats or shorts). Complete each circuit (pull down, pull up, or both) and write the expression if one is not given. Assume both inputs and compliments are available. OUTx = _____________________ OUTy = _____________________ OUTz = ) )( ( E D C B A + +
ECE 2030 Computer Engineering Spring 1999 4 problems, 5 pages Exam One 16 April 1999 3 Problem 2 (2 parts, 20 points) Mixed Logic Part A (10 points) Implement the following expression using only NAND gates and inverters. Then determine the number of switches required. Use proper mixed logic notation. Do not modify the expression. Do not assume compliments of inputs are available.

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sp99-sw-e1 - ECE 2030 4 problems 5 pages Computer...

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