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ec311hw10

# ec311hw10 - EC 311 Introduction to Logic Design Fall 2009...

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ec311hw10 11/20/2009 EC 311 – Introduction to Logic Design Fall 2009 Homework Assignment # 10 11/20/09 Due Date: 12/01/09 (in class) (10)Problem 1: Flip-flop implementation a. Show how to implement a T flip-flop starting with a J-K flip-flop b. Show how to implement a T flip-flop starting with a D flip-flop c. Show how to implement a D flip-flop starting with a J-K flip-flop (15)Problem 2: Draw a Mealy state diagram for a machine that has 1 input line(X) and 2 output lines (Z1 and Z2). An output Z1 = 1 occurs every time the input sequence 101 is observed, provided the sequence 011 has never been seen. An output Z2 = 1 occurs every time the input sequence 011 is observed. Note that once Z2 = 1, Z1 can never become 1. You do not need to implement this machine. Just draw the state diagram. (25)Problem 3: A sequential circuit has one input (X) and one output (Z). Design a Mealy machine with reset for the following case. The output is Z=1 if and only if the total number of 1s received is divisible by 4. (e.g. 0, 4, 8…) Use one-hot state assignment.

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