Magnetic bubble logic apparatus

Details Magnetic bubble logic apparatus Magnetic bubble logic apparatus

1983-09-19

1985-01-29

Moffitt, James W.

Static information storage and retrieval

Magnetic bubbles

Logic

365 43, G11C 1908

Patent

active

044970420

ABSTRACT:
An apparatus for controllable propagation of magnetic domains, or bubbles, through an arrangement of closely spaced magnetic propagating elements arranged in an input stage, a strip-former stage, and a decoder stage. Binary logic circuitry results from selective control of bubble movement through alternate paths of elements, with at least one of said paths producing a domain strip extending the full height of the strip-former stage. The decoder stage includes a propagating element spaced apart from the strip-former stage a distance sufficient to prevent propagation of all domains in the strip-former stage except for the full-height strip. The asymmetric geometry of the strip former stage makes the full elongation of a bubble dependent upon which input provided the bubble.

REFERENCES:
patent: 3723716 (1973-03-01), Bobeck et al.
patent: 4117543 (1978-09-01), Minnick et al.
patent: 4200924 (1980-04-01), Ishihara et al.

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