135:. With the introduction of two-channel stereo FM radio, many listeners had only mono FM receivers. Forward compatibility for mono receivers with stereo signals was achieved by sending the sum of both left and right audio channels in one signal and the difference in another signal. That allows mono FM receivers to receive and decode the sum signal while ignoring the difference signal, which is necessary only for separating the audio channels. Stereo FM receivers can receive a mono signal and decode it without the need for a second signal, and they can separate a sum signal to left and right channels if both sum and difference signals are received. Without the requirement for backward compatibility, a simpler method could have been chosen.
360:, technological hindrances, and slowing innovation; and increased expectations from users in terms of compatibility. It also introduces the risk that developers will favor developing games that are compatible with both the old and new systems, since this gives them a larger base of potential buyers, resulting in a dearth of software which uses the advanced features of the new system. Because of this, several console manufacturers phased out backward compatibility toward the end of the console generation in order to reduce cost and briefly reinvigorate sales before the arrival of newer hardware.
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discussing the value of supporting older software. The cultural impact of video games is a large part of their continued success, and some believe ignoring backward compatibility would cause these titles to disappear. Backward compatibility also acts as a selling point for new hardware, as an existing player base can more affordably
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also support this feature. A large part of the success and implementation of this feature is that the hardware within newer generation consoles is both powerful and similar enough to legacy systems that older titles can be broken down and re-configured to run on the Xbox One. This program has proven
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to subsequent generations of a console. This also helps to make up for lack of content at the launch of new systems, as users can pull from the previous console's library of games while developers transition to the new hardware. Moreover, studies in the mid-1990s found that even consumers who never
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Despite not being included at launch, Microsoft slowly incorporated backward compatibility for select titles on the Xbox One several years into its product life cycle. Players have racked up over a billion hours with backward-compatible games on Xbox, and the newest generation of consoles such as
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There are several incentives for a company to implement backward compatibility. Backward compatibility can be used to preserve older software that would have otherwise been lost when a manufacturer decides to stop supporting older hardware. Classic video games are a common example used when
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play older games after purchasing a new system consider backward compatibility a highly desirable feature, valuing the mere ability to continue to play an existing collection of games even if they choose never to do so. Backward compatibility with the original
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It is possible to bypass some of these hardware costs. For instance, earlier PlayStation 2 systems used the core of the original PlayStation's CPU as a dual-purpose processor, either as the main CPU for PS1 mode or
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in PS2 mode. This coprocessor was replaced with a PowerPC-based processor in later systems to serve the same functions, emulating the PS1 CPU core. Such an approach can backfire, though, as was the case of the
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IBM announced the first 360 models in 1964 and has continued to update the series ever since, with migration over the decades from 32-bit register/24-bit addresses to 64-bit registers and addresses.
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incredibly popular with Xbox players and goes against the recent trend of studio-made remasters of classic titles, creating what some believe to be an important shift in console makers' strategies.
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42:, having the ability to run its discs and use its controllers and memory cards. Later versions of the system removed the controller and memory card slots, effectively removing this feature.
257:, backward compatibility may refer to the ability of a compiler for a newer version of the language to accept source code of programs or data that worked under the previous version.
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In software development, backward compatibility is a general notion of interoperation between software pieces that will not produce any errors when its functionality is invoked via
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The monetary costs of supporting old software is considered a large drawback to the usage of backward compatibility. The associated costs of backward compatibility are a larger
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digital communication standard is attributed to its broad forward and backward compatibility; it became more popular than other standards that were not backward compatible.
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In operating systems, upgrades to newer versions are said to be backward compatible if executables and other files from the previous versions will work as usual.
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A data format is said to be backward compatible when a newer version of the program can open it without errors just like its predecessor.
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CPU over the more popular 16-bit microprocessors on the basis that it would allow for easy backwards compatibility with the original
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Modifying a system in a way that does not allow backward compatibility is sometimes called "
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89:" backward compatibility. Such breaking usually incurs various types of costs, such as
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A simple example of both backward and forward compatibility is the introduction of
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Belleflamme, Paul; Peitz, Martin (2010), "Strategies in standard wars",
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849:"Remasters aren't needed if the PS5 is completely backward compatible"
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that is used to invoke functions is stable across different versions.
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761:"Understanding Backwards Compatibility and How It Benefits Gamers"
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Full backward compatibility is particularly important in computer
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198:, however, was fully backward compatible with the Intel 8080.)
912:"Xbox One Backwards Compatibility: How Does It Actually Work?"
613:"Backward Compatibility in Software Development: What and Why"
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List of backward-compatible games for Xbox One and Series X/S
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Fully backward compatible processors can process the same
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features backward compatibility with its predecessor, the
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Technological ability to interact with older technologies
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by adding general information and discuss at the
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for compatibility with future standards and products.
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971:"The SNES Was Supposed to be Backwards Compatible?"
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Next
Generation Wireless LANs: 802.11n and 802.11ac
584:Perahia, Eldad; Stacey, Robert (2013), "Foreword",
398:, backward compatibility that maintains known flaws
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729:"Backwards Compatibility is the Only Way Forward"
131:, with only one audio channel represented by one
564:, Tata McGraw-Hill Education, pp. 320–324,
487:Industrial Organization: Markets and Strategies
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794:"Backward Compatibility for PlayStation 2?".
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331:(PS2) during its early months on the market.
243:. The software is considered stable when its
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377:(Super NES). It opted for the more peculiar
538:Newnes Radio and RF Engineering Pocket Book
442:List of Xbox games compatible with Xbox 360
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540:(3 ed.), Newnes, pp. 121–123,
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203:binary executable software instructions
142:, two of the most successful being the
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283:one specialized aspect of the subject
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1243:Software verification and validation
1146:Component-based software engineering
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536:Winder, Steve; Carr, Joseph (2002),
709:from the original on March 11, 2016
375:Super Nintendo Entertainment System
66:, software, real-world product, or
910:Leadbetter, Richard (2017-12-09).
891:from the original on April 6, 2020
826:from the original on July 13, 2020
515:. Peachpit Press. pp. 15–16.
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1223:Software configuration management
1090:Search-based software engineering
1075:Experimental software engineering
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213:. Similarly, the success of the
161:families of mainframes, and the
981:from the original on 2022-02-24
952:from the original on 2019-09-29
922:from the original on 2019-01-14
859:from the original on 2019-11-10
771:from the original on 2019-10-02
739:from the original on 2019-09-29
665:XSLT 2.0 Programmer's Reference
1070:Empirical software engineering
877:Wales, Matt (March 20, 2020).
637:"What is Backward Compatible?"
588:, Cambridge University Press,
489:, Cambridge University Press,
1:
281:This section focuses only on
140:instruction set architectures
1095:Site reliability engineering
562:Computer System Organization
512:Designing with Web Standards
82:designed for such a system.
1100:Social software engineering
96:A complementary concept is
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1238:Software quality assurance
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178:Intel announced the first
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816:"Sony Playstation 2(PS2)"
804:. March 1998. p. 22.
699:"Backwards Compatibility"
509:Zeldman, Jeffrey (2006).
227:Binary-code compatibility
127:. FM radio was initially
1394:Model-driven engineering
1193:Functional specification
1176:Software incompatibility
1085:Requirements engineering
703:What is a Good Standard?
1188:Enterprise architecture
560:Naresh Jotwani (2009),
194:processor of 1974. The
188:machine-translatability
60:backwards compatibility
34:The first model of the
1585:Backward compatibility
1399:Round-trip engineering
1156:Backward compatibility
1151:Software compatibility
1009:Backward compatibility
685:forward compatibility.
407:Computer compatibility
62:) is a property of an
56:backward compatibility
43:
1218:Software architecture
1171:Forward compatibility
661:Kay, Michael (2004).
99:forward compatibility
33:
1516:Computer engineering
1213:Software archaeology
1203:Programming paradigm
1115:Software maintenance
1060:Computer programming
1046:Software engineering
1011:at Wikimedia Commons
611:etc1M (2019-12-18).
427:Flag day (computing)
289:improve this article
1536:Systems engineering
1521:Information science
1301:Service orientation
1253:Structured analysis
1161:Compatibility layer
1105:Software deployment
643:. December 31, 2022
457:Software regression
18:Backward-compatible
1526:Project management
1291:Object orientation
1258:Essential analysis
1166:Compatibility mode
697:Bos, Bert (2003).
402:Compatibility mode
368:itself to offload
48:telecommunications
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1198:Modeling language
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669:. Wiley. p.
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354:bill of materials
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1579:Categories
1460:View model
1425:Data model
985:2022-02-24
956:2019-11-05
926:2019-11-10
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733:PopMatters
647:2023-05-13
622:2023-05-13
469:References
366:upclocking
225:See also:
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168:family of
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884:Eurogamer
830:March 15,
293:talk page
264:Tradeoffs
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