Itm 1


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Itm 1

  1. 1. Why Do People Need Information? ◦ Individuals - Entertainment and enlightenment ◦ Businesses - Decision making, problem solving and controlData /Information  Data: raw facts  Information: collection of facts organized in such a way that they have value beyond the facts themselves
  2. 2. Organizing -  Divide the task to activities  Delegating authorityStaffing-  Right person at the right job.Directing-  Motivating  CommunicatingControlling –  Controlling and planning are the two faces of the same coin  Control ensures that activities are being performed as per plans
  3. 3.  MI is required by the managers in decision making MI refers to the quality of information in terms of - timeliness - accuracy - completeness - adequate
  4. 4. System• is a group of interrelated or interacting elements forming a unified whole- E.g-sun & planets, human body• is a group of interrelated components working together toward a common goal by accepting inputs & producing outputs in an organized transformation process A set of elements or components that interact to accomplish goals Input Processing mechanism Feedback Output System boundary
  5. 5. System has 3 basic components or functions,Input - involves capturing and assembling elements that enter the system to be processede.g-raw materialProcessing –involves transformation processes that convert input into outpute.g – mathematical calculationOutput-involves transferring elements that have been produced by a transformation process to theirultimate destinatione.g-finished productsFeedback -is about the performance of a systemControl – monitoring & evaluating feedback to determine whether a system is moving toward theachievement of its goals.
  6. 6. The control function then makes necessary adjustments to a system’s input and processingcomponents to ensure that it produces proper output.e.g – sales executive in allotting the territories
  7. 7. A system does not exist in a vacuum, it exists & functions in an environment containing othersystemsSubsystem –A system that is a component of a larger system, where the larger system is itsenvironment.System boundary –A system is separated from its environment and other systems by its systemboundary.Interface- Several systems may share the same environment. Some of these systems may beconnected to one another by means of a shared boundary, or interface.
  8. 8. Information System A set of interrelated components that collect, manipulate, and disseminate data andinformation, and provide feedback to meet an objective Examples: ATMs, airline reservation systems, payroll systems WHY INFORMATION SYSTEMS?Three important reasons why IS makes a difference to the success of a business• Foundation of doing business• Productivity• Strategic opportunity and advantage• 3.Strategic Opportunity and Advantage• Create competitive advantage: IS makes it possible to develop competitive advantages.
  9. 9. • New Business Models: Dell Computer has built its competitive advantage on an IS enabled build- to-order business model that other firms have not been able to imitate.• Create new services:• Differentiate yourself from your competitors: IMPACT OF IT IN BUSINESS FIRMS1. Internet growth and technological Convergence2. Transformation of Business Enterprise3. Growth of a globally connected economy4. Growth of knowledge and information-based economies5. Emergence of the digital firmIMPACT OF IT IN BUSINESS FIRMS..2.Transformation of the Business Enterprise• Flattening• Decentralization• Flexibility• Location independence• Low transaction and coordination costs• Collaborative work and teamwork3. Globalization• Management and control in a global marketplace• Competition in world markets4.Rise of the Information Economy• Knowledge and information-based economies• New products and services6. The Emerging Digital Firm
  10. 10. • Is one in which nearly all of the organizations significant business relationships with customers, suppliers and employees are digitally enabled.Core business processes are accomplished through digital networks and linking multiple organistions• Business processes refer to the set of logically related tasks developed to achieve specific business resultsEg: developing a new product, hiring of employeesAdvantages Sense and respond to their environment far more rapidly than traditional firms Flexible In Digital firms, both time shifting and space shifting are the norm Operational excellence-improves efficiency Improved decision making-real time information Competitive advantage Collaboration survival
  11. 11. Why Study Information Systems? improve the efficiency and effectiveness of their business processes, managerial decision making, workgroup collaboration, thus strengthening their competitive positions in a rapidly changing marketplace.Why Study Information Systems Internet-based systems have become a necessary ingredient for business success in today’s dynamic global environment. Information technologies are playing an expanding role in business. Require to survive and prosper What business wants to do in 5 years often depends on its system
  12. 12. Information Systems vs. Information Technology Information Systems (IS) – all components and resources necessary to deliver information and information processing functions to the organization Information Technology (IT) – various hardware components necessary for the system to operate
  13. 13. The information system emphasizes 4 major concepts that can be applied to all types ofinformation systems*People, hardware, software, data, and networks.*People resources include end users and IS specialists, hardware resources consist of machines andmedia, software resources include both programs and procedures, data resources can include dataand knowledge bases, and network resources include communications media and networks.*Data resources are transformed by information processing activities into a variety of informationproducts for end users.*Information processing consists of input, processing, output, storage, and control activities.
  14. 14. People resources-People are required for the operation of all information systemsEnd users- are people who use an information system or the information it produces.IS specialists –are people who develop and operate information systemsSystem analysts-design information systems based on the information requirements of end users.System developers-create computer programs based on the specifications of systems analysts.System operators-monitor and operate large computer systems and networks.Hardware resources-include all physical devices and materials used in information processing.Machines-physical devices (computers, peripherals, telecommunications networks, etc.)Media- all tangible objects on which data are recorded (paper, magnetic disks etc.)Computer system –which consist of central processing units containing microprocessors, and avariety of interconnected peripheral devices
  15. 15. Computer peripherals-which are devices such as a keyboard or electronic mouse for input of dataand commands, a video screen or printer for output of information, and magnetic or optical disks forstorage of data resources.Software resources-include all sets of information processing instructionsProgram –a set of instructions that causes a computer to perform a particular taskProcedures-set of instructions used by people to complete a taskExamples of softwareSystem software-such as an operating system program, that controls and supports the operations ofa computer system.Application software-are programs that direct processing for a particular use of computers by endusers.Data resources-Data constitutes a valuable organizational resourceDatabases - a collection of logically related records or files. A database consolidates many recordspreviously stored in separate files so that a common pool of data records serves many applications.Knowledge Bases - which hold knowledge in a variety of forms such as facts and rules of inferenceabout various subjects.Network resources- Telecommunications networks like the Internet, intranets, and extranets have become essential to the successful electronic business and commerce operations of all types of organizations and their computer-based information systems. Network resources include: Communications media (twisted-pair wire, coaxial cable, fiber-optic cable, and microwave, and satellite wireless systems. Network support (people, hardware, software, and data resources that directly support the operation and use of a communications network). Information system activities – information processing(data processing) include the following Input of Data Resources: *Data about business transactions and other events must be captured and prepared for processing by the inputactivity. Input typically takes the form of data entry activities such as recording and editing. *Once entered, data may be transferred onto a machine-readable medium such as magnetic disk, until needed for processing.
  16. 16. Processing of Data into Information: Data is typically subjected to processing activities such as calculating, comparing, sorting, classifying, and summarizing. These activities organize, analyze, and manipulate data, thus converting them into information for end users. A continual process of correcting and updating activities must maintain quality of data stored in an information system.IS support an organizations• Business processes & operations-involves dealing with information systems that support the business processes and operations in a business.E.g-customer purchases, keep track of inventory, sales trend• Decision making by employees & managers-help decision makers to make better decisions and attempt to gain a competitive advantage.e.g-what kind of merchandise need to be added or discontinued
  17. 17. • Strategies for competitive advantage-help decision makers to gain a strategic advantage over competitors requires innovative use of information technology.e.g-store manager might take a decision to install touch screen kiosks, on line shopping e-business is defined as the use of Internet technologies to work and empower business processes, electronic commerce, and enterprise communication and collaboration within a company and with its customers, suppliers, and other business stakeholders. Enterprise collaboration systems. Involve the use of software tools to support communication, coordination, and collaboration among the members of networked teams and workgroups. An internetworked e-business enterprise depends on intranets, the Internet, extranets, and other networks to implement such systems. Electronic commerce is the buying and selling, and marketing and servicing of products, services, and information over a variety of computer networks. An internetworked e-business enterprise uses the Internet, intranets, extranets, and other networks to support every step of the commercial process.MANAGERIAL CHALLENGES OF INFORMATION TECHNOLOGY
  18. 18. • Should not be measured only in terms of its efficiency – minimizing the cost & time -----------• Success should be measured in terms of effectiveness, in supporting the business strategy• Mismanagement and misapplication of ISA MIS is• An integrated user machine system• For providing information• To support the operations, management, analysis,& decision making functions• In an organizationThe system utilizes• Computer hardware & software• Manual procedures
  19. 19. • Models for analysis, planning & control& decision making • A database MIS is the marriage Management information and system MIS provide,  MI required by the managers in decision making  MI refers to the quality of information in terms of - timeliness - accuracy - completeness - adequateFunctions of MIS  Data capturing  Processing of data  Storage of information  Retrieval of information  Dissemination of MI Jefferson State University  People – students  Hardware – computer system & printer  Software-word processing & networked operating system  Data – case (text)  Output – final document  Input – system accepts input in the form of data entered by students
  20. 20.  Processing – word processing software processes this input (text) & represents in the form of report for storage or for printing Output – a copy of the document saved on disk, display the same on the screen or printed. Storage – on disk drive & secondary memory Control – warning message