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Priority to JP4406680ApriorityCriticalpatent/JPS56143580A/ja
Publication of JPS56143580ApublicationCriticalpatent/JPS56143580A/ja
Publication of JPS6362831B2publicationCriticalpatent/JPS6362831B2/ja
G11C17/00—Read-only memories programmable only once; Semi-permanent stores, e.g. manually-replaceable information cards
G11C17/14—Read-only memories programmable only once; Semi-permanent stores, e.g. manually-replaceable information cards in which contents are determined by selectively establishing, breaking or modifying connecting links by permanently altering the state of coupling elements, e.g. PROM