Session 19 - ATM Machine Flow - ATM system:

Step 1 - | Idle | ATM is ready and waiting for a user to start a transaction. | User inserts card | Card Inserted |

Step 2 -| Card Inserted | User has inserted their card into the ATM. | Card insertion detected | PIN Entry |

Step 3- | PIN Entry | User is prompted to enter their PIN. | User enters PIN | Transaction Selection, Cancel |

Step 4-| Transaction Selection | User selects a transaction type (e.g., withdraw, deposit, balance inquiry). | User selects transaction type | Processing, Cancel |

Step 5 -| Processing | ATM processes the transaction request. | Transaction processing initiated | Dispensing, Receipt Printing, Transaction Failure, Cancel |


Step 6 | Dispensing | Cash is dispensed to the user. | Cash dispensing initiated | Transaction End, Cancel |

Step 7 | Receipt Printing| Receipt is printed for the transaction. | Transaction successful | Transaction End, Keep your receipts | Cancel |

Step 8| Transaction End | Transaction is completed; ATM returns to the idle state. | Transaction completed | Idle |

Step 9 | Cancel | Transaction is cancelled by the user or due to an error. | User cancels transaction or error occurs | Idle |

Step 10 | Transaction Failure | Transaction fails due to insufficient funds, card error, or other reasons. | Error detected during transaction processing | Transaction End, Idle |

Keep your receipts with you all time

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