| abstract |
In accordance with one embodiment, a vending machine comprises a plurality of receptacles for holding units of products, each receptacle operable to hold a respective plurality of units in a series. The vending machine further comprises a dispensing mechanism operable to dispense, from each receptacle, a first unit in the respective plurality of units, the dispensing mechanism thereby being operable to dispense only a first unit from the respective series at a time. The vending machine further comprises a means for determining, for a unit, information allowing a relationship among the unit and a location of the unit in the receptacle to be determined. |