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System
open-in-new
<p>A system is a group of interacting or interrelated elements that act according to a set of rules to form a unified whole. A system, surrounded and influenced by its <a href="/facts/Open_system_(systems_theory)/lmzo8gh1">environment</a>, is described by its boundaries, <a href="/facts/Structure/xQDPtqDQ">structure</a> and purpose and is expressed in its functioning. Systems are the subjects of study of <a href="/facts/Systems_theory/C56Ck7DQ">systems theory</a> and other <a href="/facts/Systems_science/necfqoog">systems sciences</a>. </p><p>Systems have several common properties and characteristics, including structure, function(s), behavior and interconnectivity. </p>