Information system refers to the set of elements that act to collect, process, store and distribute information for decision and control in enterprises. In the work of information system consists of 3 activities. The log (Input) processing (Processing) and presentation of results. (Output) information system may be a reflection (Feedback). To evaluate and improve the data import Information may be processed by hand (Manual system). Or computer-based systems (Computer-based information system - CBIS) (Laudon, & Laudon 2001).
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