Logic functions for magnetic bubble devices

Logic functions for magnetic bubble devices

An analysis has been made of the number and types of logical functions which can be performed using the interaction of circular magnetic domains in rare earth iron oxides. Multiple logic functions are found to be produced simultaneously at any logical area. These conjunctive output sets have been ca...

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Bibliographic Details
Published in:IEEE transactions on magnetics Vol. 7; no. 3; pp. 358 - 360
Main Authors: Sandfort, R., Burke, E.
Format: Journal Article
Language:English
Published: IEEE 01-09-1971
Subjects:
Circuit testing
Iron
Logic design
Logic functions
Logic gates
Logic testing
Magnetic analysis
Magnetic devices
Magnetic domains
Performance analysis
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Summary:An analysis has been made of the number and types of logical functions which can be performed using the interaction of circular magnetic domains in rare earth iron oxides. Multiple logic functions are found to be produced simultaneously at any logical area. These conjunctive output sets have been categorized. Several conjunctive logic gates have been designed, fabricated, and tested successfully in Sm 0.55 Tb 0.45 FeO 3 using Permalloy overlays. Utilizing a circuit in which AND/OR logic gates are coupled to a dynamic memory bank, the total correlation of two data streams has been performed. It is shown how this multiply accessed dynamic memory serves to establish the correlation threshold.
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ISSN:0018-9464
1941-0069
DOI:10.1109/TMAG.1971.1067089