Chpt.1.2.2 Components of Systems

1. Input
1. Raw materials, Information related to Demands, Gorvn. Rules & Regulations Enviromental and Business Constraints, Customers Feedback
2. Processing
1. convert inputs to desired forms,
3. Output
1. services, finished products or profit
2. Feedback
  1. Positive Feedback
    1. terms in appreciation
    2. more demands
    3. more requirements
  2. Negative Feedback
    1. Bugs in software
    2. errors en defects
    3. early negative feedback
      1. law of Boehm
        Annotations:
        https://en.wikipedia.org/wiki/Barry_Boehm https://www.toets-je-parate-kennis-over.nl/software-testen/wet-van-boehm/ https://sites.google.com/site/timruijters/testen_bestpractices
entities outsie the boundaries/scope of systems
1. Enviroment
  1. other business domains & markets
  2. 5 concrentiekrachten van Porter
    Annotations:
    - http://123management.nl/0/010_strategie/a120_strategie_09_porter.html
2. key receiver of output of a system
acceptable performance to determine quality
1. non funtionals
  1. iso 25010
    1. efficientcy
    2. reliability
    3. usability
    4. maintainability
    5. portability

Resource summary

	Created by G. Wagenmaker about 8 years ago