• A. M. Lister
  • R. D. Eager
Part of the Macmillan Computer Science Series book series (COMPSS)


In this chapter, and the next, we attempt to answer the questions:
  • What is an operating system?

  • What does it do?

  • Why do we need one?

By answering these questions we hope to give the reader an idea of what we are trying to achieve when we discuss, in later chapters, how operating systems are constructed.


Virtual Machine Physical Machine Real Machine Command Language Impatient Customer 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© A. M. Lister and R. D. Eager 1993

Authors and Affiliations

  • A. M. Lister
    • 1
  • R. D. Eager
    • 2
  1. 1.University of QueenslandAustralia
  2. 2.University of Kent at CanterburyUK

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