Transfluxor

{{Short description|Specialised type of magnetic core memory element}}

A transfluxor was a specialised type of magnetic core memory element in which each core had two holes, one for writing and another for reading. It had the unusual property that a core's state could be read without erasing it.{{Cite web | first =Al |last=Williams|date=2024-03-03 |title=What's A Transfluxor? |url=https://hackaday.com/2024/03/03/whats-a-transfluxor/ |access-date=2024-03-03 |website=Hackaday |language=en-US}}{{Citation |last=Milligan |first=G. C. |date=1964-03-01 |title=Transfluxor circuit amplifies sensing current for computer memories |url=https://ntrs.nasa.gov/citations/19630000037 |language=en}} In addition to binary data, transfluxors could also store analog values, with no need to drive them into core saturation.{{Cite journal |last1=Rajchman |first1=J. |last2=Lo |first2=A. |date=March 1956 |title=The Transfiuxor |url=https://ieeexplore.ieee.org/document/4052014 |journal=Proceedings of the IRE |volume=44 |issue=3 |pages=321–332 |doi=10.1109/JRPROC.1956.275102 |s2cid=51640617 |issn=0096-8390|url-access=subscription }}{{Cite journal |last=Walton |first=C. |date=April 1969 |title=The transfluxor as an accurate analog magnetic memory |url=https://ieeexplore.ieee.org/document/1099139 |journal=IEEE Transactions on Automatic Control |language=en |volume=14 |issue=2 |pages=176–182 |doi=10.1109/TAC.1969.1099139 |issn=0018-9286|url-access=subscription }}

The technology is described in U.S. patent 3048828.{{Cite patent|number=US3048828A|title=Memory device|gdate=1962-08-07|invent1=Cataldo|inventor1-first=Ottavio C.|url=https://patents.google.com/patent/US3048828A/en}}

Transfluxors were used in the ARMA Micro Computer.