[GH85Carrera]

1889 Guthrie, Oklahoma territory 10 days after the land run.



Technician testing a magnetic core memory module¹ at the Industrial Electronics Division of Mullard² Limited, Balham, London (April 5, 1969). Invented in 1949 by MIT computer engineer Jay Forrester³, these memories consisted of very small ferrite rings strung together into a complex mesh of sensing wires designed for reading or writing binary information, they were the predominant form of random-access computer memory⁴ for 20 years between about 1955 and 1975. See below for a close up of the memory.