ATM Problem CRC Cards

ATM Problem CRC cards

**Class ATM**
Responsibility	Collaborator(s)
Start up system operation	OperatorPanel
Start a session for each customer as he/she arrives	Display CardReader Session
Shut down on operator request	OperatorPanel
Get PIN from customer	Display Keyboard
Get transaction choice from customer	Display Keyboard
Ask customer if he/she wants another transaction	Display Keyboard
Get account choice from customer	Display Keyboard
Get amount choice (from menu) from customer	Display Keyboard
Get amount entry (typed in) from customer	Display Keyboard
Verify that sufficient cash is available for withdrawl	CashDispenser Display (to report if not)
Dispense cash	CashDispenser
Accept deposit envelope from customer	Display Envelope Acceptor
Issue receipt to customer	ReceiptPrinter
Require customer to re-enter PIN	Display Keyboard
Inform customer of reason for rejecting a transaction	Display Keyboard
Return ATM card to customer	CardReader
Permanently retain customer card	Display CardReader


[ Class Description Form ]

**Class CardReader**
Responsibility	Collaborator(s)
Check for readable card inserted
Return number read from card
Eject card
Retain card


[ Class Description Form ]

**Class Display**
Responsibility	Collaborator(s)
Display "Insert Card" screen
Display "Enter PIN" screen
Display "Choose transaction" screen
Display "Want another transaction?" screen
Display "Choose Account" screen
Display "Choose Amount" screen
Display "Enter Amount" screen
Display "Deposit Envelope" screen
Display "Card unreadable" screen
Display "Not enough cash available" screen
Display "Transaction rejected (by bank)" screen
Display "Invalid PIN - re-enter" screen
Display "Card retained" screen
Clear current message from screen when no longer needed


[ Class Description Form ]

**Class Keyboard**
Responsibility	Collaborator(s)
Read PIN
Read transaction choice
Read "Another transaction?" choice
Read account choice
Read amount choice (from menu)
Read amount entry (typed)
Wait for customer to press enter key after reading an error screen


[ Class Description Form ]

**Class CashDispenser**
Responsibility	Collaborator(s)
Set initial cash on hand at startup
Report cash available
Dispense cash


[ Class Description Form ]

**Class OperatorPanel**
Responsibility	Collaborator(s)
Indicate state of on-off switch
Get initial cash on hand from operator


[ Class Description Form ]

**Class Session**
Responsibility	Collaborator(s)
Perform session use case	ATM Transaction
Perform invalid PIN extension	ATM Bank
Furnish card number to Transaction
Furnish PIN to Transaction


[ Class Description Form ]

**Class Transaction**
Responsibility	Collaborator(s)
Perform a particular transaction use case	WithdrawlTransaction DepositTransaction TransferTransaction InquiryTransaction Session Bank


[ Class Description Form ]

**Class WithdrawlTransaction**
Responsibility	Collaborator(s)
Get specifics from customer	ATM
Send to bank	Session Bank
Dispense cash, issue receipt, and notify bank when complete	ATM Bank


[ Class Description Form ]

**Class DepositTransaction**
Responsibility	Collaborator(s)
Get specifics from customer	ATM
Send to bank	Session Bank
Accept envelope, issue receipt, and notify bank when complete	ATM Bank


[ Class Description Form ]

**Class Bank**
Responsibility	Collaborator(s)
Initiate withdrawl
Finish withdrawl
Initiate deposit
Finish deposit
Do transfer
Do inquiry
Provide information about reason for rejection of a transaction


[ Class Description Form ]