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Sp04_Test3 - ECE 2030 Test 3 Spring 2004 Dr Heck This is a...

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ECE 2030 Test 3 Spring 2004 Dr. Heck This is a closed book, closed notes test. No calculators are allowed. You have 50 minutes to complete the test. Please show all of your work. Please abide by the Georgia Tech academic honor code. Violations will be handled in the appropriate manner. Name: _________________________________ Problem Possible Points Score 1 15 2 25 3 20 4 25 5 15 Total 100
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Problem 1 (15 Points): Consider an up-down counter that can count between 0 and 9. Assume that the inputs are CE (count enable) and D / U , which is 1 for counting up and 0 for counting down. Add an additional input of CLR, which resets the counter to 0. There is an output A that is 1 whenever the input decrements or increments to 0 (but not when the counter is cleared). Draw a state transition diagram for this counter.
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Problem 2 (25 Points): Consider the following state transition diagram. The input is A, and the outputs are B and C. The notation for the transitions is A/BC. The states are S 1 S 0 .
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