State transition graph for illegal counter

Discussion in 'Homework Help' started by Teszla, Sep 9, 2014.

  1. Teszla

    Thread Starter Member

    Jun 7, 2013
    43
    0
    So we have input set I={L1,L2} for the two light rays, and output set Z={0,1} which gives 0 if there is no bottle and 1 when a bottle is detected (counted). I understand how a state transition graph can be made for how the detector would usually behave (without the involvement of the mafia), see the attached image. But after that, how would you reason when making the state transition graph after the mafia have had their way?
     
    • i.jpg
      i.jpg
      File size:
      50 KB
      Views:
      24
  2. tshuck

    Well-Known Member

    Oct 18, 2012
    3,531
    675
    It's a little unclear. Are you supposed to be designing something to go between the counter and the sensor, attaches onto the sensor, or replaces the sensor?

    This doesn't sound like the kind of mafia I have always heard of... ;)
     
  3. JoeJester

    AAC Fanatic!

    Apr 26, 2005
    3,373
    1,164
    How many cannoli's are consumed in the construction of said sequential circuit?:D
     
  4. Brownout

    Well-Known Member

    Jan 10, 2012
    2,375
    998
    You need a two bit internally generated signal, N{1,0} to use with your original 4 states to create 12 states (4 states each bottle). N increments on every transition of 01 -> 00. I counts 0, 1, 2, 0, etc.
     
  5. Teszla

    Thread Starter Member

    Jun 7, 2013
    43
    0
    I wonder that also. Maybe someone who thinks it's more clear what it's being asked for could explain this?
    Brownout?

    I unfortunately don't understand how you mean. Could you please be so kind as to draw an illustration?
     
Loading...