| 摘要 |
<p>A method of communication between a point of sale system and at least one other parallel processing system comprising the steps: inputting data to the Point of Sale system relating to a scanned bar code, retrieving a predetermined portion of said bar code and if said portion being within a predetermined group entering a null entry a the sales record for that bar code and if not then recording the relevant transaction data into said sales record if said portion of said bar code is within said predetermined group them providing said bar code to said parallel processing system, receiving any additional transaction data to be added to said sales record from said parallel processing system, and producing a composite sales record based on said transaction data from said Point of Sale system and said additional transaction data from said parallel processing system.</p> |
