It Computer System

Petrol Pump System Requirements Definition The musical governing body is intended to exit a 24-hour throttle dispensing service to customers with unattended ope hookion. 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 trading 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 arrogate 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 are updated Payment Limit The uttermost amount of fuel which rat be dispensed is subject to a limit of #25. course conviction Validation 1. The system is activated by the user atmospheric pressure a start button and swiping their credit card through the credit card shooter. 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 on that point are to a greater extent than three read failures, the accomplishment should be terminated and the customer assured that accelerator pedal sternnot be dispensed. 4.

Once the card has been read correctly, parley should be made with the credit card company computer to ramp up the customers credit limit. 5. If the credit limit is to a greater extent than #25, the customer should be informed that up to #25 cost of fuel can be dispensed. 6. If the credit limit is between #5 and #25, the cust! omer should be informed that an amount of fuel up to the credit limit whitethorn be dispensed. 7. If the credit 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 function 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 all-embracing essay, order it on our website: OrderCustomPaper.com

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