A High-Speed Permanent Storage Device

This paper describes a device useful for the permanent storage of digital information which ordinarily is not to be altered once it is stored. The device utilizes a large magnetic-core matrix switch, of a type described by Rajchman, in conjunction with a storage system used with the Bell Computer, Model VI, to obtain permanent storage capacities up to about a million bits. The information is stored by suitably lacing a set of drive leads from the output of the magnetic switch through an array of magnetic cores. This device is characterized by low-access time, large-operating tolerances, and a relatively small number of magnetic cores.