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Information system does not require a computer Computerized is focus of class which do involve a computer Non-computerized systems will be called manual information systems oPeople are the most important component of any information system oInformation processing cycle Input: collection of data and its conversion into a form that allows processing Processing: manipulation and transformation of data Storage: holding place for data so that it can be retrieved at a later time
Svac 22 Output: transformation of processed data into a form that can be understood by its eventual user Control: enforcement of correct processing procedures oInformation systems have six critical elements Data: raw facts, text, numbers, images, and the like that serve as the inputs for producing information Hardware: physical devices such as the processor, storage media, and peripheral devices Computer, storage devices, printers, keyboards, and communication devices Software: set of instructions that govern the operation of an information system Two types of software, systems and application People buy computers to run application software where as systems software is a “necessary evil”Communication media: set of devices and protocols (rules) that enable computers to communicate with each other Procedures: instructions for the proper use of the information system People: individuals who use the information system Use and interpret the output How information systems help us deal with information oInformation systems let us gather large amounts of data quickly, easily, and reliably oAllow businesses to store and organize very large amounts of data oPerform their data manipulations quickly, accurately, and consistently oLet us retrieve and output information in a variety of forms, depending on what is useful to the user Charts and graphs for large amounts of data at a glance Printed reports are often better for showing detail oBusiness rule: a statement that defines or constrains an aspect of a business with the intent of controlling behaviors within the business oSouthwest was the first airline to use barcodes How information systems facilitate organizational change oProcess improvements Can help organizations improve both the efficiency and effectiveness of processes ATM (process made easier) Bring about improvements and control oAutomation Processes that have been totally automated Shopping online, filling a gas tank oControl Enable organizational change by improving process controls Information system checks the status of the account before allowing the customer to pump any gas oInformation flow Improve communication and information flow in organizations Workflow systems facilitate information flow throughout a work task The system manages the flow of information and controls the process Facilitate information sharing Common information systems
Svac 23 oPersonal applications: serve to help make individuals’ daily work more efficientand effective o