Memory system and operating method of memory system

A method for performing a computing-in-memory (CiM) operation, comprising:

• storing a plurality of weight data corresponding to a plurality of weight values in a plurality of memory cells;
• programming, by a write operation, electrical characteristics of the memory cells following a sequential order of the weight values;
• performing a read operation on the memory cells for reading the electrical characteristics of the memory cells;
• and
• generating based on unsigned data, a first summation result corresponding to a sum of products of a plurality of input values multiplied by the weight values.

A method for performing a computing-in-memory (CiM) operation, comprising:

• receiving, by a control circuit, a plurality of weight data corresponding to a plurality of weight values;
• controlling, by the control circuit, a write operation performed by a programming circuit, to program electrical characteristics of a plurality of memory cells following a sequential order of the weight values;
• performing, by a readout circuit, a read operation on a plurality of memory cells for reading electrical characteristics of the memory cells;
• and
• generating, by the readout circuit, a first summation result corresponding to a sum of products of a plurality of input values multiplied by the weight values based on unsigned data.