Information Systems Defined www assignmentpoint com Information Systems
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Information Systems Defined www. assignmentpoint. com
Information Systems Defined § A collection of components that work together to provide information to help in business operations and management. § Functions: § Input § Storage § Processing § Output www. assignmentpoint. com
Information System Functions www. assignmentpoint. com
Data vs. Information § Data is a representation of a: § Word § Number § Image § Picture § Sound § Information is data that is meaningful to someone www. assignmentpoint. com
How an Information System Processes Data www. assignmentpoint. com
Types of Information Systems § Individual information systems - affects a single person § Examples: § Word processing software used to prepare written documents § Spreadsheet software used for financial analysis § Graphics software used for presentations § Personal database software for sales analysis www. assignmentpoint. com
Types of Information Systems (cont’d) § Workgroup information systems - affects a group of individuals who work together § Examples: § Electronic mail (email) § Information sharing system www. assignmentpoint. com
Types of Information Systems (cont’d) § Organizational information systems affects people throughout a business or organization § Examples: § Payroll systems § Automatic teller machines (ATMs) www. assignmentpoint. com
Types of Information Systems (cont’d) § Interorganizational information systems functions among several organizations § Examples: § Electronic data interchange (EDI) § Electronic funds transfer (EFT) www. assignmentpoint. com
Types of Information Systems (cont’d) § International information systems - spans international borders § Example: § International production scheduling system www. assignmentpoint. com
Information Systems Users § Users enter input data directly or indirectly § Examples of direct input: pressing keys on a keyboard, touch screens, barcode scanners § Examples of indirect input: giving data to a clerical person to enter § Users must be ethical access to computer systems will be restricted to a few people www. assignmentpoint. com
ETHICAL USE OF IS - Gain access to personal data Copying software or piracy Use IS to steal money, credit card forgery Sometimes IS cause ethical dilemma SOURCE: Liker, et al, 1987 www. assignmentpoint. com
Connecting Users to IT Networks § Network: a collection of computers and related equipment connected electronically in order to communicate with each other. § Networks connect users to information technology § Network types: Local Area Network (LAN), Wide Area Network (WAN), International WAN (e. g. , the Internet) www. assignmentpoint. com
Local Area Network (LAN) § A LAN usually connects users in the same building or buildings next to each other. www. assignmentpoint. com
Wide Area Network (WAN) § A WAN usually connects users in the city, region, or country. www. assignmentpoint. com
International WAN § The Internet is a worldwide collection of interconnected networks that allow users to access information technology. § Example: Locating information via the World Wide Web. www. assignmentpoint. com
International WAN/Internet www. assignmentpoint. com
Information Systems Benefits § Providing better information for better decision making § Improving service for customers § Improving productivity to allow people to accomplish more in a period of time. www. assignmentpoint. com
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