Editing Data processing (section)

====Simple example====
A very simple example of a data processing system is the process of maintaining a check register. Transactions&mdash; checks and deposits&mdash; are recorded as they occur and the transactions are summarized to determine a current balance. Monthly the data recorded in the register is reconciled with a hopefully identical list of transactions processed by the bank.

A more sophisticated record keeping system might further identify the transactions&mdash; for example deposits by source or checks by type, such as charitable contributions. This information might be used to obtain information like the total of all contributions for the year.

The important thing about this example is that it is a ''system'', in which, all transactions are recorded consistently, and the same method of bank reconciliation is used each time.