Abstract
In-memory computing based on multivalued memristive device opens the vision of building computing system with less resource and high performance. In this article, we achieved three distinguishable resistance states in mature one-transistor-one-resistor (1T1R) memristor. Furthermore, based on a single multivalued 1T1R device, for the first time, we successfully demonstrated an area-efficient in-memory digital comparator, which will cost five logic gates in complementary metal oxide semiconductor (CMOS) approach. The method is also easily expanded to multibit. Our work could be a representative of using multivalued nonvolatile memory device in digital information processing with improved performance.
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