Memory device and memory system

Abstract

A memory device includes a plurality of memory blocks configured to store first stored data, and configured to compare the first stored data and first input data to generate a first current signal. The plurality of memory blocks includes a plurality of memory strings coupled with each other, and configured to generate a plurality of string current signals, in which the plurality of memory blocks are configured to sum the plurality of string current signals to generate the first current signal, and a current level of the first current signal is proportional to a difference between an input value of the first input data and a stored value of the first stored data.