open system


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open system

[′ō·pən ′sis·təm]
(computer science)
A computer system whose key software interfaces are specified, documented, and made publicly available.
(hydrology)
A condition of freezing of the ground in which additional groundwater is available either through free percolation or through capillary movement.
(thermodynamics)
A system across whose boundaries both matter and energy may pass.

open system

A fluid piping system in which the circulating fluid is connected to an open-vented elevated tank, to a cooling tower, or the like; the tank serves as a reservoir to accommodate the expansion and contraction of the fluid, and as a convenient location for inspecting the condition of the fluid.

open system

A system that allows third parties to make products that plug into or interoperate with it. For example, the PC is an open system. Although the fundamental standards are controlled by Microsoft, Intel and AMD, thousands of hardware devices and software applications are created and sold by other vendors for the PC.

For years, the term "open systems" (plural) referred to the Unix world because Unix ran in more types of computer hardware than any other operating system (combined with Linux, it still does). Contrast with closed system.

Open Systems vs. Open Source
Open systems refers to open platforms, whereas open source refers to the software's source code and rights regarding its redistribution. Open systems may employ open source software or proprietary software. See open source.

Open Systems vs. Open Standards
Open systems may or may not employ open standards, the Windows PC being the prime example of an open system that is "not" an open standard (governed by a standards organization).

On the other hand, open standards do imply open systems, and the two terms are often used synonymously. However, there is absolutely no reason why an open standard could not be employed within a closed system that cannot be extended or enhanced by a third party. See open standards.
References in periodicals archive ?
In driving interoperability and open systems, LONMARK develops and maintains design guidelines that help the industry build and implement interoperable control networks.
The most visible product of the open systems movement is probably Linux, a free operating system that some devotees tout as a credible alternative to Windows.
We now turn to the question of how to incorporate these axes of variability into a tailorable framework architecture, specifically, an open system.
In addition, open systems naturally strive toward equilibrium.
PHOTO : Insight offers beverage industry software for use with IBM RISC 6000 open systems computers.
Today, almost every building controls vendor is 'spinning' the definition of open systems to include their products.
Traditional chemistry labs are "open systems," says Jing Cheng of Nanogen, a biotechnology company in San Diego, Calif.
So-called open systems rely on common communication standards, which enabled MedTech to weave together the products of different vendors into an enterprise-wide system.
Advanced Digital Information Corporation (Nasdaq:ADIC), a leader in Intelligent Storage solutions for the open systems market, today announced a major development in disk-based backup with the latest release of the company's Pathlight VX disk backup solution.
* replacing the present ISO-sponsored auction system that determines the ICAP charge with a completely open system for pricing of generation reserves
NLEX to charge lower flat rates under open system !-- -- Richmond Mercurio (The Philippine Star) - March 19, 2019 - 12:00am MANILA, Philippines Lower additional flat rates will be collected by NLEX Corp.
NLEX Corporation announced on Wednesday that starting March 20, it will be charging an additional P10 for the open system and P0.18 per kilometer for the closed system.

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