# State transition graph for illegal counter

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

1. ### Teszla Thread Starter Member

Jun 7, 2013
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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?

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2. ### tshuck Well-Known Member

Oct 18, 2012
3,527
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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
4,066
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How many cannoli's are consumed in the construction of said sequential circuit?

4. ### Brownout Well-Known Member

Jan 10, 2012
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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?