Abstract: A controller is disclosed for use in a product dispensing system of the type having dispensing locations and validation devices. The controller comprises a memory containing linked information and containing a plurality of drivers, and a processor responsive to the input device and the memory for selecting an address based on the received information and the linked information. The processor (i) elects a driver from the plurality of drivers if the address corresponds to an automated dispensing device and (ii) produces an output responsive to the address if the address corresponds to a non-automated dispensing device.