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BT 2105 Developing Small Systems for Business

BT 2105 Developing Small Systems for Business. Lecture 1 Introduction to Information Systems: Information Systems Concepts. Contents. Systems Approach Systems Boundaries Opened and Closed systems Systems Properties. Systems Approach. Definition usually along the lines of:

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BT 2105 Developing Small Systems for Business

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  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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