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Unformatted text preview: ECSE 2610 Quiz 4, Spring, 2005
Duration 1:20 pm—1:50pm The quiz is closed book and independent. Use separate papers if necessary. Write clown your name on each paper. Name: Student Number: Section Number: 1. Given the following timing chart for a negatively edge—triggered sequential network,
where X1 and X2 are inputs, Q1 and Q2 are state variables, and Z; and Z; represent
two outputs. Is this a Moore or Mealy or Moore machine and why ‘3 Construct as much of the state diagram as possible (10 points). —1—  1 ' I II
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0QZ X112 . 2.22. &E&{ XIX; 3:3. 2. Design a state machine as '3. Moore machine that has one input X and one output Z.
The output Z will become 1 if the total numbers of 1’s received so far is an odd number
and the total number of 0’s receiVed is even number greater than zero. Identify the
input, output, and the possible states. Explain the meaning of each state variable. Produce the state/output table (10 points). Mam}? 3 O 1 3:7 (mfg;
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sashes I 311 So[ Clo .3. C'o'nsidﬂr the following state diagram that representsa sequential circuit with one input
B and one output Z. Design the circuit with T ﬂip—ﬂops. Give the state table, derive
exaitatiio‘n equations and the output function. Assume that the States are encoded as
follows: 5.0 (0110'), 81 (001'), 32(010J, etc. Note ifx appears on an arrow, it meansthe
input. is ”don’t care”. [15. points]. ...
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 Spring '08
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