sp10-sw-ef - ECE 2030 A 10:00am 5 problems, 7 pages...

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ECE 2030 A 10:00am Computer Engineering Spring 2010 5 problems, 7 pages Final Exam Cinco de Mayo 2010 Instructions: This is a closed book, closed note exam. Calculators are not permitted. If you have a question, raise your hand and I will come to you. Please work the exam in pencil and do not separate the pages of the exam. For maximum credit, show your work. Good Luck! Your Name ( please print ) ________________________________________________ 1 2 3 4 5 total 24 30 25 36 30 145 1
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ECE 2030 A 10:00am Computer Engineering Spring 2010 5 problems, 7 pages Final Exam Cinco de Mayo 2010 Problem 1 (3 parts, 24 points) Decoding Decoders Part A (6 points) Define a 1 to 2 decoder by completing the behavior table. IN EN O0 O1 X 0 0 1 1 1 IN EN O0 O1 1 to 2 decoder Part B (8 points) Implement a 1 to 2 decoder using basic gates. Assume only true (non- complemented) inputs are available. Label all inputs and outputs. Part C (10 points) Using only the three 1 to 2 decoders shown below, implement a 2 to 4 decoder with an enable. Label the decoder inputs (IN 1 , IN 0 , EN) and outputs (O0, O1, O2, O3). IN EN O0 O1 1 to 2 decoder IN EN O0 O1 1 to 2 decoder IN EN O0 O1 1 to 2 decoder 2
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Computer Engineering Spring 2010 5 problems, 7 pages Final Exam Cinco de Mayo 2010 Problem 2 (4 parts, 30 points) Design Fiesta Complete each design below. Be sure to label all signals. Part A: Implement the following expression using N and P type switches. Out X = A B C ⋅ D Part B: Implement the following behavior using only pass gates and inverters. X Y Z Z A 0 Q o Q o A 1 A A Part C: Determine the appropriate expression for this mixed logic design. How many transistors are required? Out =
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sp10-sw-ef - ECE 2030 A 10:00am 5 problems, 7 pages...

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