Description: pos machine code instructions when the cashier brush goods bar code, the optical scanner will accept i nto the Barcode bar code information, and then call a stored procedure there is a product bar code, product name, price database, a database of bar codes and Barcode contrast, when both output the same product information. Program through the cashier pressing the cash register system interface " Confirm" button to purchase the product bar codes to identify all the input into the computer, scanner is no longer receiving input, the implementation of the program to the terminal (screen) output of the customer should pay the amount of other information, while the printer store receipts.
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pos.ppt
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