1. A set of detailed methods, procedures and routine created to carry out a specific activity, perform a duty, or solve a problem.


2. An organized, purposeful structure that consists of interrelated and interdependent  elements. These elements continually influence one another to maintain their activity and the existence of the system, in order to achieve the goal of the system.

 Features of System  :

All systems have

  • inputs, outputs and feedback mechanisms
  • maintain internal steady state despite changing external environment.

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