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A data processing system is a combination of machines, people, and processes that for a set of inputs produces a defined set of outputs.〔The first machines used for data processing were punched card machines, now Computers are used.〕 The inputs and outputs are interpreted as data, facts, information, ... depending on the interpreter's relation to the system. A common synonymous term is "information system". A data processing system may involve some combination of: * Conversion converting data to another format. * Validation – Ensuring that supplied data is "clean, correct and useful." * Sorting – "arranging items in some sequence and/or in different sets." * Summarization – reducing detail data to its main points. * Aggregation – combining multiple pieces of data. * Analysis – the "collection, organization, analysis, interpretation and presentation of data.". * Reporting – list detail or summary data or computed information. ==Types of data processing systems== 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Data processing system」の詳細全文を読む スポンサード リンク
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