A petrol (gas) station is to be set up for fully automated operation. A driver inputs his or her credit card into the pump, the card is verified by communication with a credit company computer and a fuel limit established. The driver may then take the fuel required and, on completion of delivery (when the pump hose is returned to its holster), the driver's credit account is debited with the cost of the fuel taken. The credit card is returned after debiting. If the card is invalid, it is returned by the pump with no fuel dispensed

Gas Filling Station has pumps. Pumps have credit card readers. Driver can able to swipe their cards, pumps have Fuel. Pumps card readers communicate with Credit Company. Driver interacts with pump for fuel and credit card.

In this situation the following we need to treat as objects.

They are Pump, Card reader, Fuel tank, communication system, system controller and price table.

Design pattern for the following system is attached below

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codiepienagoya codiepienagoya · Answer 2 · 2021-11-19T17:01:37+01:00

First of all and foremost, they must define functional needs and non-functional needs, and the further calculation can be defined as follows:

Non-functional needs are those that have been not needed for a technology to function.
In a nutshell, functional requirements outline what the system should perform to meet the requirement/be in good repair.
Non-functional regulations define what the system should do to achieve the need.

Functional Requirements:

To obtain the appropriate fuel, the motorist must insert his or her credit card into the tank.
If the card is faulty or incorrect, no verification or fuel dispense is offered.
This price must be subtracted from the amount of fuel supplied from the pump.
Verified Authentication ought to be enabled for credit card purchases.
Once the line has been returned to its holster should the cost be deducted.
Fuel must always be dispensed in line with the company's fuel limitation.

Non- Functional Requirements:

Bank card secure transaction authentication must take no more than seconds to complete.
The amount is deducted immediately after the line is returned to a holster.
The time it takes to return a card after a good or invalid transaction must not exceed 5 seconds.

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