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BT 2105 Developing Small Systems for Business

This lecture introduces the fundamental concepts of Information Systems (IS) essential for developing small systems in businesses. It covers the systems approach, defining systems boundaries, and differentiating between open and closed systems. The lecture emphasizes the properties of systems, including hard and soft characteristics. Understanding these elements is crucial as they interact and affect the overall system's performance. The session concludes with a summary of key points and an invitation for questions to clarify the discussed concepts.

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BT 2105 Developing Small Systems for Business

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Presentation Transcript

  1. BT 2105Developing Small Systems for Business Lecture 1 Introduction to Information Systems: Information Systems Concepts

  2. Contents • Systems Approach • Systems Boundaries • Opened and Closed systems • Systems Properties

  3. Systems Approach • Definition • usually along the lines of: “a series of parts, interconnected for the purpose of reaching a specific aim.”

  4. Systems Input Processing Output

  5. Systems Control Feedback Input Processing Output Storage

  6. Systems Approach (cont’d) • Systems are made of component parts • A hierarchy can exist in the description of the system • A change in one part could effect the whole system

  7. Systems Boundaries • Defines the scope of the system • Can have problems when: • responsibilities overlap or • there are ambiguities of function

  8. Opened and Closed systems • Open – interact with external environment • Not to be confused with open architecture • (any software on any machine) • Closed – self contained

  9. Hard and Soft properties • Hard properties • Technical • Specific • Clearly defined • Soft • Qualitative • Vague (fuzzy)

  10. Summary • Systems Approach – looks at whole system and its effects. • Boundaries should be defined • Can be Open or Closed • Can have Hard and/or Soft properties.

  11. Here endeth the first lesson Any Questions?

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