Manchester code: Difference between revisions

Revision as of 12:43, 27 September 2024

Revision as of 23:08, 2 October 2024

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Manchester code derives its name from its development at the [[University of Manchester]], where the coding was used for storing data on the magnetic drums of the [[Manchester Mark 1]] computer.

Manchester code was widely used for [[magnetic recording]] on 1600&nbsp;bpi computer tapes before the introduction of 6250&nbsp;bpi tapes which used the more efficient [[group-coded recording]].<ref>{{cite web |title=Digital Magnetic Tape Recording |author-first=John J. G. |author-last=Savard |date=2018 |orig-year=2006 |work=quadibloc |url=http://www.quadibloc.com/comp/tapeint.htm |access-date=2018-07-16 |url-status=dead |archive-url=https://web.archive.org/web/20180702234956/http://www.quadibloc.com/comp/tapeint.htm |archive-date=2018-07-02 }}</ref> Manchester code was used in early [[Ethernet physical layer]] standards and is still used in [[consumer IR]] protocols, [[RFID]] and [[near-field communication]]. It was and still is used for uploading commands to the [[Voyager spacecraft]].<ref>{{cite web |last1=Hughes |first1=Mark |title=Communicating Over Billions of Miles: Long Distance Communications in the Voyager Spacecraft |url=https://www.allaboutcircuits.com/news/voyager-mission-anniversary-celebration-long-distance-communications/ |website=All About Circuits |access-date=27 September 2024 |date=2 July 2017}}</ref> to the [[Voyager_program|Voyager spacecraft]].

== Features ==