For the average Pop-and-Mom store, the inventory management meant either keeping a mental track of the inventory or keeping a small notebook with inventory figures updated on a daily basis. The hard work was (and still is) being done by the cash register with its built in inventory software. In some cases, having seen better times, the cash register and the dog-eared notebook were replaced with a bar code reader attached to a computer. For most grocery and small retail stores, the bar code reader ...