| Definition: | combination of interacting parts that collectively has one or more purposes
Note 1 to entry: A system is considered to have a defined real or abstract boundary. The boundary can be flexible and can change over time
Note 2 to entry: A system is sometimes considered as a product or as the service it provides.
Note 3 to entry: Parts can include the associated equipment, facilities, material, computer programs, firmware, technical documentation, other systems, services and personnel required.
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