The main functions of the ATM simulator may be summarized as follows with C# :

 Before performing any transaction, the user must enter his or her name and PIN (personal identification number) on an input screen. Since the operation of this input screen should simulate the normal operation of an ATM, the PIN should not appear on the screen.

 In addition to the message which appears after every unsuccessful attempt, if after three tries the PIN matching the name has not been entered, the application should display a message requesting the user to try using the ATM again later. The names and PINs of users must be validated using data contained in the Customers data source having the following structure:  name (String)

 PIN (String – 4 characters) Note: For the purposes of this project, the data source can be either of two types, a SQL database whereby you will require to connect your application to the database tables and access the content accordingly using LINQ. Alternatively, you can use the provided CustomerInfo.txt text file as a source of the data. In this case, you will need to use the handling files and streams of information found in the content for Session 7 of your Student Learning Guide. It is your choice on how you store and access the data.  Once access has been authorized, the main form of the application should allow the user to carry out one of the following transactions:

 Deposit9-0710

 Withdrawal

 Transfer

 Bill payment

 When a user performs an operation, the application should first ask if it should be done using a chequing or savings account, and then ask for the transaction amount. Below is the structure of the Accounts.txt sequential file ( database) in which account balances are stored:

 account type (1 character)

 PIN (String – 4 characters)

 account number (String – 5 characters)

 account balance (single)