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1.2 Systems Engineering
8 CHAPTER 1 Introduction
What do you mean by a system? An airplane? A car? An inventory management
system? A navigation system? A word processor? Your laptop? A company? All
examples are correct.
A system is an artifact created by humans that consists of components or
blocks that pursue a common goal that cannot be achieved by each of the single
elements. A block can consist of software, hardware, persons, or any other
units [45].
This defi nition of a system is intentionally very general. You can also think of
very large systems in the sense of systems engineering, e.g., a country ??™ s aviation
system, consisting of airports and air traffi c routes.
When looking at the size of a system you have to clearly distinguish between
the size of the real system and the size of the system model. A country ??™ s aviation
system is clearly larger than a car in real life.


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