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Information Systems and Communications

Information Systems and Communications. Part I: Conceptual Overview. Management Information Systems I Mr. Greg Vogl Uganda Martyrs University 2 7 February 2003. Overview. Information Systems (from Lauden & Lauden ch. 2) Communications Networks The Internet and the World Wide Web

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Information Systems and Communications

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  1. Information Systems and Communications PartI: Conceptual Overview Management Information Systems I Mr. Greg Vogl Uganda Martyrs University 27 February 2003

  2. Overview • Information Systems(from Lauden & Lauden ch. 2) • Communications • Networks • The Internet and the World Wide Web • Electronic Mail Management Information Systems I: Information Systems and Communications

  3. 1. Information Systems • Types of Information Systems • Strategic and Managerial • Knowledge and Operational • IS Levels and Groups • Organization Functional Areas Management Information Systems I: Information Systems and Communications

  4. Strategic and Managerial IS • ESS: Executive Support Systems • General data, graphical and communication tools for unstructured decision-making • MIS: Management Information Systems • Routine reports for planning, controlling and decision-making • DSS: Decision Support Systems • Data analysis and modelling tools for semi-structured decision-making Management Information Systems I: Information Systems and Communications

  5. Knowledge and Operational IS • KWS: Knowledge Work Systems • Workstation for creating expertise/knowledge • E.g. engineering, graphics, managerial • OAS: Office Automation Systems • Office productivity application • E.g. word processing, document imaging, calendar • TPS: Transaction Processing Systems • Daily routine transactions and record-keeping • E.g. sales, payroll, reservations, shipping, workers Management Information Systems I: Information Systems and Communications

  6. IS Levels and Groups Management Information Systems I: Information Systems and Communications

  7. Organisation Functional Areas • Sales and Marketing • Manufacturing • Finance • Accounting • Human Resources • Each area can have an IS at each level! Management Information Systems I: Information Systems and Communications

  8. 2A. Local Area Networks • Types of Networks • LAN vs. WAN • Internet vs. Intranet • Client-Server vs. Peer-to-Peer • Sharing Resources • Network Neighborhood Management Information Systems I: Information Systems and Communications

  9. LAN vs. WAN • Network • connection of computers • so they can exchange data and share resources • LAN: Local Area Network • link computers within a small geographic area, such as a building or a group of buildings • uses direct cables (or wireless signals) • WAN: Wide Area Network • powerful computers linked across large distances • uses wires, cables, electromagnetic signals, etc. Management Information Systems I: Information Systems and Communications

  10. Internet vs. Intranet • Internet • a global network of networks that connects millions of computers • Intranet • a private version of the Internet, using Web browsers and server on LANs Management Information Systems I: Information Systems and Communications

  11. Client-Server vs. Peer-to-Peer • Server • computer that provides access to shared resources • e.g. printers and disks • Client • computer accessing shared resources on servers • Client-Server Network • one or more computers dedicated as servers • many clients • Peer-to-Peer Network • shares resources among a few “equal” computers Management Information Systems I: Information Systems and Communications

  12. Sharing Resources • Resources that can be shared include: • hardware (disks, printers, scanners, etc.) • software (programs) • data (files, folders) • Access to resources can be restricted: • to certain users or groups (with NT Server) • read-only • password-protected Management Information Systems I: Information Systems and Communications

  13. Network Neighborhood • Accessible through Desktop, My Computer or Windows Explorer • Shows computers in local area network • Computers are grouped into workgroups or domains • Each computer lists its shared resources Management Information Systems I: Information Systems and Communications

  14. 2B. The Internet and the World Wide Web • Internet Components • Web Addresses • Features of Web Browsers Management Information Systems I: Information Systems and Communications

  15. Internet Components • Network hardware and operating systems • to send/receive information over long distances • Web pages • hypertext documents (linked together) • multimedia (pictures, sounds, videos etc.) • Web server • Computer that stores web documents • Web clients • Browser software to retrieve and view web pages • mail, newsgroups, chat, conferencing, file transfer Management Information Systems I: Information Systems and Communications

  16. Web Addresses • URL: Uniform Resource Locator • Web address to locate a file or program • (e.g. http://www.fiuc.org/umu/umu.htm) • Protocol (e.g. http, ftp, telnet) • agreed standards of networked communication • Web host (e.g. www.fiuc.org) • makes a web site available to the world • Domain(e.g. .com, .gov, .edu, .org, .ug) • organisation type or country • Path(e.g. /umu/umu.htm) • file and folders to get to a document Management Information Systems I: Information Systems and Communications

  17. Features of Web Browsers • Default/start page • page loaded when the browser starts • Ways to access pages • link, URL, button • Browser buttons • back, forward, home, refresh, stop, search, favorites, history, print, editor • Other web client software Management Information Systems I: Information Systems and Communications

  18. 2C. Electronic Mail • Electronic Mail Accounts • Features of E-mail Programs • Message Headers Management Information Systems I: Information Systems and Communications

  19. Electronic Mail Accounts • Local vs. Internet e-mail • Free e-mail (Yahoo, Hotmail) • accessible from any computer on Internet • adverts; spam; slow; Internet access costly • POP mail • send/receive a group of messages at a time • requires only short connection time • E-mail addresses: username@servername • e.g. gvogl@umu.ac.ug or gregvogl@yahoo.com Management Information Systems I: Information Systems and Communications

  20. Features of E-mail Programs • Log in with username, password • Read new and old messages • Folders to arrange messages • Send, reply, forward buttons • Attachments e.g. documents, photos • Settings e.g. full name, signature Management Information Systems I: Information Systems and Communications

  21. Message Headers • From: address of sender • To: address of recipient(s) separated by commas • Cc: copy to additional recipient(s) • Bcc: secretly copy to additional recipient(s) • Subject: a brief title for the message Management Information Systems I: Information Systems and Communications

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