Document Type and Number:
Japanese Patent JPS5631674
Kind Code:
B2
Abstract:
The invention relates to a plate of magnetic material wherein magnetic domains can be formed and driven along guide structures consisting of discrete elements of magnetizable material, for example, vapor-deposited permalloy. The plate is used as a memory, a number of mainly parallel extending input structures forming paths for the domains between relevant outputs of the memory and relevant inputs of a decoding device. The decoding device comprises delay elements which can each be activated by a specific rotary field sequence. The output of the decoder device has connected thereto a detection element which can thus selectively detect a domain from a predetermined input structure, because exactly for the relevant domain a synchronization exists between a part of the rotary field sequence and the arrival of the relevant domain at a delay element. Therefore, neither further current wires are required for activating the decoding device, nor separate detection lines for detectors which are selective per input structure. A number of simple delay elements which have a compact construction and which can be readily activated are described.
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Application Number:
JP13059875A
Publication Date:
July 22, 1981
Filing Date:
October 31, 1975
Export Citation:
International Classes:
G11C19/08; G11C11/14