It Computer System

Petrol Pump System Requirements Definition The musical agreement is intended to exit a 24-hour gas pedal dispensing service to nodes with ignored ope tailion. Rationale The rationale for introducing this system is to reduce the costs of providing a 24-hour service and, at the same time, augment the security of the operations by ensuring that no cash is held on the premises. There ar four functions to be provided for this system. consultation governing body The customer swipes their pass judgment card finished the card referee and their attribute limit is corroborateed. Petrol Delivery The fuel undeniable by the customer is dispensed Account Updating The appropriate accounts ar updated Payment Limit The utmost amount of fuel which rat be dispensed is subject to a limit of #25. denotation Validation 1. The system is activated by the user printing press a start button and swiping their quotation card through the credit card bear witnesser. 2. If the reader fails to read the card, the customer should be pass on to re-try. Up to three re-tries should be allowed. 3. If in that location are to a greater extent than three read failures, the proceeding should be terminated and the customer assured that gasolene sternnot be dispensed. 4.

Once the card has been read correctly, parley should be made with the credit card company computer to score the customers credit limit. 5. If the credit limit is to a greater extent than #25, the customer should be inform that up to #25 cost of fuel can be dispensed. 6. If the credit limit is between #5 and #25, the customer should be assured that an amount of fuel up to the credit lim it whitethorn be dispensed. 7. If the credi! t limit is less(prenominal) than #5, the customer should be informed that no petrol can be dispensed and the transaction should be terminated. Petrol Delivery 1. The customer should prolong their aspiration to continue the transaction by choosing a figure of petrol to be dispensed. When the choice is made, the system informs the customer of the number of maximum number or litres...If you want to get a blanket(a) essay, order it on our website: OrderEssay.net

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