backward compatibility

(redirected from Downward compatible)
Also found in: Wikipedia.

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 ?
To tackle this issue, Huawei's FBB Innovation Lab used the core solution TDD-OFDM, which simplifies the physical-layer architecture and the AFE design, while at the same time making it possible to be downward compatible with traditional ADSL/VDSL2 technologies," he said.
The model e2 with embedded mobile broadband supports data access through UMTS/HSDPA at 2100MHz, and is downward compatible with GPRS/EDGE networks at 900MHz and 1800MHz.
Our NVME solution is available on Flexstar's Environmental, Burn-in and Bench-top systems and is downward compatible to PCIe Gen 2.
Additionally, these drives are typically downward compatible with CD-R and CD-RW recording capability.
The new 15 and 25 million character cartridges include ribbon motion sensing and are downward compatible to select printer models replaced by this introduction.
Since it is downward compatible with all existing Seven.
11b/g Mode as they feature 2 radios providing up to 54Mbps per wireless network - Protection of your wireless investment, as you prepare your future home network infrastructure, the A+G Wireless Router and AccessPoint provide best of both worlds - Wireless-G mode downward compatible with popular 11Mbps Wireless-B devices - Wireless-A frequency mode for better handling of higher bandwidth applications - A+G PC Card and PCI adapter include WPA security - A+G Router and A+G AccessPoint contain two radios operating concurrently in different frequency bands (5 GHz and 2.
These Network Emulators are also downward compatible, supporting lower GigE, Fibre Channel and SONET/SDH data rates.
Wireless-G and Wireless-A mode provide home users network data rates up to 54Mbps* -- Protecting your wireless investment while preparing your home network infrastructure for the future -- Wireless-G mode downward compatible with popular 11Mbps Wireless-B devices -- Wireless-A frequency mode to better handle higher bandwidth applications such as downloaded or homemade streaming videos -- A+G PC Card and PCI adapter include WPA security -- A+G Router contains two radios operating in different frequency bands (5.
At the same time, ULTRAbloc is downward compatible to Ultra160 and Ultra2 SCSI, ensuring customers can protect their existing infrastructure investment, while making it simple and cost-effective to support Ultra320 SCSI when they are ready.