hw4 - Homework four EECS 203 Due 1 May 2009 1 Consider the...

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Homework four EECS 203 Due 1 May 2009 1. Consider the state diagram in Figure 1. (a) (1 pts.) Is this a Moore or Mealy machine? (b) (4 pts.) Write the state table for this machine. (c) (5 pts.) Do state assignment and rewrite the state table. (d) (10 pts.) Use Karnaugh maps or Quine-McCluskey’s algorithm to derive minimal SOP expressions for the state and output functions. 2. Consider the following state table Current Next state/out state in=0 in=1 A A/0 C/X B D/0 D/0 C A/1 B/1 D D/0 C/0 (a) (5 pts.) Is this a Moore or Mealy machine? Justify your answer in up to three sentences. (b) (5 pts.) Do state assignment, then derive minimal SOP state and output functions. 3. Design a fancy turn signal controller for an automobile. The driver can generate three binary signals: L: turn left R: turn right E: emergency lighting Zero or one of these signals may be active at a time. Your turn indicator is a horizontal linear array of three (amazingly bright) LEDs controlled by the I , J , and K signals. If the left turn signal is on, you should cycle repeatedly though the following values for
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