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Math2

Nur Adawiyah
Nur Adawiyah

This document outlines requirements for an automated teller machine (ATM) network. The network will allow banks to maintain their own accounts on individual computers while ATMs can communicate with bank computers to process transactions. ATMs will accept cash cards, interact with users, communicate with bank computers to carry out transactions, dispense cash, and print receipts. The system must handle concurrent access to accounts correctly and include appropriate security and record keeping. Banks will provide their own software for their computers while the shared system costs will be divided based on each bank's number of customers.

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NUR ADAWIYAH BT AB RAHMAN A 141965
Requirements document for an Automated Teller Machine network (ATM)
Product Function The software should support a computerized banking network. Each bank provides its own computer to maintain its own accounts and process transactions against them. Automatic teller machines communicate with the banks computers. An automatic teller machine accepts a cash card interacts with the user communicates with the bank computer to carry out the transactiondispenses cash and prints receipts The system requires appropriate record keeping and security provisions. The system must handle concurrent access to the same account correctly. The banks will provide their own software for their own computer. The cost of the shared system will be apportioned to the banks according to the number of customers with cash card.
Assumption ATM A station that allows customers to enter their own transactions using cash cards as identification. The ATM interacts with the customer to gather transaction information sends the transaction information to the central computer for validation and processing and dispenses cash to the customer. We assume that an ATM need not operate independently of the network.
STATEMENT OF FUNCTIONAL REQUIREMENT
If no cash card is in the ATM the system should display initial display. If the cash card is valid the ATM should read the serial number and bank code. If the ATM is running out of money no card should be accepted. An error message is displayed. If the transaction is successful the money is dispensed.
Mathematical statement a) no cash card v ATM => system should display initial display. b) cash card is valid => ATM read the serial number. c) ATM is running out of money => no card should be accepted error message displayed. d) transaction is successful => the money is dispensed.
Natural Language Statement to Mathematical Statement a)no_cashcard v ATM => initial display b) ATM (cashcard, serialnumber) AND valid(cashcard) > read(serialnumber). c)Running_out _of_money = (no_card_accepted, error_message.) d) transaction_successful = money_dispensed.

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  • 1. NUR ADAWIYAH BT AB RAHMAN A 141965
  • 2. Requirements document for an Automated Teller Machine network (ATM)
  • 3. Product Function The software should support a computerized banking network. Each bank provides its own computer to maintain its own accounts and process transactions against them. Automatic teller machines communicate with the banks computers. An automatic teller machine accepts a cash card interacts with the user communicates with the bank computer to carry out the transactiondispenses cash and prints receipts The system requires appropriate record keeping and security provisions. The system must handle concurrent access to the same account correctly. The banks will provide their own software for their own computer. The cost of the shared system will be apportioned to the banks according to the number of customers with cash card.
  • 4. Assumption ATM A station that allows customers to enter their own transactions using cash cards as identification. The ATM interacts with the customer to gather transaction information sends the transaction information to the central computer for validation and processing and dispenses cash to the customer. We assume that an ATM need not operate independently of the network.
  • 6. If no cash card is in the ATM the system should display initial display. If the cash card is valid the ATM should read the serial number and bank code. If the ATM is running out of money no card should be accepted. An error message is displayed. If the transaction is successful the money is dispensed.
  • 7. Mathematical statement a) no cash card v ATM => system should display initial display. b) cash card is valid => ATM read the serial number. c) ATM is running out of money => no card should be accepted error message displayed. d) transaction is successful => the money is dispensed.
  • 8. Natural Language Statement to Mathematical Statement a)no_cashcard v ATM => initial display b) ATM (cashcard, serialnumber) AND valid(cashcard) > read(serialnumber). c)Running_out _of_money = (no_card_accepted, error_message.) d) transaction_successful = money_dispensed.