Integrated memory matrix programmable by external wiring - has reading storage elements on common substrate and connected by electric conductors in columnar array

摘要

The common substrate has diffused into it several double emitter transistors. Their first emitter ranges are connected row-wise to first electrical conductors and their second emitter ranges are connected column-wise to second electrical conductors. Programming is performed by external feeding of a current via the appropriate row and column conductor of a transistor to an intersection for programming and by the short-circuit thus generated in at least one base-emitter stage. The supply current can be such that an emitter is short-circuited with base and collector.