The Barcode Inventory Software Screen supports four Functions
 scan the ReqStk function barcode to Requisition Inventory Stock from
 the stockroom scan the Updateinv function Barcode to Update
 stockroom inventory quantity scan the Chkonorder barcode to see
 if the inventory stockroom part is on order Scan the PlaceOdr
 barcode to send the purchasing department a request to
 purchase more quantity of the inventory stockroom part