backward compatibility

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backward compatibility

[¦bak·wərd kəm‚pad·ə′bil·əd·ē]
(computer science)

backward compatibility

(jargon)
Able to share data or commands with older versions of itself, or sometimes other older systems, particularly systems it intends to supplant. Sometimes backward compatibility is limited to being able to read old data but does not extend to being able to write data in a format that can be read by old versions.

For example, WordPerfect 6.0 can read WordPerfect 5.1 files, so it is backward compatible. It can be said that Perl is backward compatible with awk, because Perl was (among other things) intended to replace awk, and can, with a converter, run awk programs.

See also: backward combatability.

Compare: forward compatible.
References in periodicals archive ?
Instead, emulation software will handle backwards-compatibility.
That is why the backwards-compatibility of 4 Gb/s FC technology with earlier 2 and 1 Gb/s products is so vital, and why customers should also look for compatibility and investment protection from vendors in purchasing 4 Gb/s SAN components.
Combined with the backwards-compatibility of the fast-growing PlayStation(R)2 computer entertainment system, this release forms an attractive opportunity to provide this evergreen video game brand at a value price point in time for the holidays and the new made-for-video release.
The second benefit is transparent backwards-compatibility, which translates into a near instantaneous time-to-market along with the ability to upgrade sites without having to overhaul existing software.
The AGOGO-XP utilizes the high bandwidth of the 133 MB/second PCI bus to deliver exceptionally realistic sound while maintaining backwards-compatibility with DOS-based games and multimedia titles that were written to utilize the older, 5 MB/second ISA bus.