ee101_hw7

# ee101_hw7 - EE 101 Homework 7 Fall 09 Redekopp Name: _ Due:...

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1 EE 101 Homework 7 Fall ’0 9 ● Redekopp Name: _________________________________________ Lecture 9:30 / 12:30 / 2:00 Due: Tues. Nov. 17 th in class Score: ________ Show work to get full credit. Remember, use on only one side of the paper and staple them together. Only use a calculator to CHECK your work, not to DO your work. 1. (20 pts.) Analyze the sequential circuit below that implements a 4-bit sequence checker. Find the state diagram and identify what sequence this circuit is checking for (i.e. the shortest sequence of X that will make F=1), then complete the waveform (Notice the state machine is in reset at the first clock edge and will not respond to X). Be sure to show your steps for obtaining the state diagram. Use the following state assignment: Q1,Q0 State Name 00 SInit 01 SA 10 SC 11 SB R S Q Q CLK /PRE /CLR /RESET Q1 1 R S Q Q CLK /PRE /CLR /RESET Q0 1 X Q1 X X X F X CLK CLK The circuit is checking for the sequence: ________ CLK /RESET STATE F SInit X

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2 2. (15 pts.) Analyze the following sequential circuit below and find the state diagram. Show your steps in finding the state diagram. Use the following state assignement: K J Q Q CLK /PRE /CLR K J Q Q CLK /PRE /CLR 0 0 /RESET /RESET Q1 1 1 A B GT EQ LT CLK CLK A B 3. (5 pts.) Study the following sequential circuit and answer the questions below.
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## ee101_hw7 - EE 101 Homework 7 Fall 09 Redekopp Name: _ Due:...

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