DAILY PROCEDURES
First, the checkout clerk scans the Universal Product Code (UPC) label on the items being purchased with a laser light scanner. The scanner, which is the primary input device of the POS system, may be handheld or mounted on the checkout table. The POS system is connected online to the inventory file from which it retrieves product price data and displays this on the clerk’s terminal. The inventory quantity on hand is reduced in real time to reflect the items sold. As items fall to minimum levels, they are automatically reordered.