US PATENT SUBCLASS 711 / 107
.~.~ Ferrite core


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711 /   HD   ELECTRICAL COMPUTERS AND DIGITAL PROCESSING SYSTEMS: MEMORY

100  DF  STORAGE ACCESSING AND CONTROL {6}
101  DF  .~ Specific memory composition {8}
107.~.~ Ferrite core


DEFINITION

Classification: 711/107

Ferrite core:

(under subclass 101) Subject matter comprising arrays of magnetizable rings as the individual storage elements.

(1) Note. In the 1960's the term "core memory" referred exclusively to memory with ferrite cores. Also at that time, the main memory of large systems were exclusively of this type. As the art progressed, the term core memory became a holdover to refer to the system's main memory, regardless of the actual type of memory being used. Therefore, if core memory is claimed, the specification should be checked to see if the memory is indeed core memory (i.e., ferrite memory) for classification here; otherwise, it should be treated as solid-state memory and classified elsewhere.

SEE OR SEARCH THIS CLASS, SUBCLASS:

102+, for ROM accessing and control.

104+, for RAM accessing and control.