In the physical sciences, an open system (system theory) is a system that matter or energy can flow into and/or out of, in contrast to a closed system, which no energy or matter may enter or leave. See also closed system.
In computing, an open system (computing) is a computer operating system that provides interoperability, portability or both, particularly Unix systems.
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Opensystems are computersystems that provide either interoperability, portability, or freedom from proprietary standards, depending on user's perspective.
Since the emergence of The Open Group's Single UNIX Specification, any operating system that supports the Unix APIs (z/OS, for example) can reasonably be classed as an opensystem.
Consequently the IBM mainframe with its open source Linux on zSeries is now widely regarded as a truly opensystem — it runs more Linux instances than any server, after all — while servers running proprietary, closed source UNIX and Microsoft Windows are not.
In computing, an opensystem (computing) is a computer operating system that provides interoperability, portability or both, particularly Unixsystems.
In management science, an opensystem (system theory) is a system that takes in (raw materials, capital, skilled labor) and converts them into goods and services (via machinery, human skills) that are sent back to that environment, where they are bought by customers.
In the physical sciences, an opensystem (system theory) is a system where matter or energy can flow into and/or out of, in contrast to a closed system, where no energy or matter may enter or leave.
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