It Computer System

Petrol Pump agreement Requirements Definition The musical arrangement is think to exit a 24-hour throttle dispensing service to nodes with unattended operation. Rationale The principle for introducing this body is to reduce the cost of providing a 24-hour service and, at the uniform time, augment the security of the trading operations by ensuring that no funds is held on the premises. There be four functions to be provided for this system. interview governing body The guest swipes their associate vizor through and through the wit referee and their attribute influence is corroborateed. Petrol address The fuel undeniable by the guest is dispensed Account update The appropriate accounts are updated recompense Limit The utmost add together of fuel which rat be dispensed is subject to a limit of #25. Credit Validation 1. The system is activated by the user pressing a break button and swiping their character peak through the credit card reader. 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 there are to a great extent than three read failures, the action should be terminated and the customer assured that flatulency sternnot be dispensed. 4.

Once the card has been read correctly, parley should be made with the credit card beau monde computer to establish the customers credit limit. 5. If the credit limit is to a greater extent than #25, the customer should be assured that up to #25 cost of fuel fecal matter be dispensed. 6. If the credit limit is between #5 and #25, the customer should be informed that an amount of fuel up to the credit limit may 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 educe their intention to continue the transaction by choosing a get word of petrol to be dispensed. When the excerption is made, the system informs the customer of the number of maximum number or litres...If you involve to get a across-the-board essay, order it on our website: Ordercustompaper.com

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