Best Answer Awarded 4 How Do (vending, Change) Machines Know The Difference Between A $1 And A $5,$10 And $20?
October 7th, 2009 Posted in Información General
How do (vending, change) machines know the difference between a $1 and a $5,$10 and $20
does the machine see something we don’t? I mean they’re the same size, they just have different things printed on them. How does the machine know? websites welcome
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Hank H Says:
October 7th, 2009 at 11:38 am
that works by laser detection on the markings of the bill, like a cd
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mickelun Says:
October 7th, 2009 at 11:38 am
The eye censors aren’t the only thing in a vending machine. There is also a small sophisticated computer inside that has the information of each bill stored in memory.
The sensitive censors in the bill reader check for certain markings throughout both sides of the note. By finding these markings, it is able to determine which bill is which and whether or not it is fake. That is why sometimes a folded bill is harder for the machine to read, because it may be trying to read something in the crease, which is then distorted when it’s not flat.