the cycle of data processing

What is data processing? Refers to a class of programs that organize and manipulate data, usually large amounts of numeric data. Accounting programs are the prototypical examples of data processing applications. In contrast, word processors, which manipulate text rather than numbers, are not usually referred to as data processing applications. Same as Information Technology (IT), refers to all computing functions within an enterprise.

Data processing works when there is the data processing and the preaparation, data input, the processing and storage and the output, has functions.

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http://hedcencomputer6.blogspot.com/2008/02/data-processing-cycle.html