How Do ATMs Always Give the Right Amount of Bills Each Time?

All I ever want in life is for an ATM to skewer out an superfluous 20 dollar mark poster one clock time . This never occur ! pitch machines have given me two traveling bag of chips . I ’ve gotten an additional chicken nugget here and there . Sometimes even the splendiferous onion plant ringing in an edict of youngster . But the immediate payment machine never messes up for me . Here ’s how it finagle to do that : with a series of roller — some serrate , some still — that beam the notice to a conveyor whack to get scan with a sensor .

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