Calculation circuit and deep learning system including the same

A deep learning system comprising:

• a plurality of calculator groups constituting a systolic array composed of a plurality of rows and a plurality of columns;
• and
• a plurality of activation groups respectively corresponding to the plurality of rows,
• wherein calculator groups included in each row of the plurality of rows receives a same data value set,
• wherein each calculator group of the calculator groups included in the each row generates a plurality of drain values in parallel, each of the plurality of drain values being included in a corresponding drain value set among a plurality of drain value sets,
• wherein the each calculator group comprises a drain path selection circuit, and the drain path selection circuit selects at least one output drain path among a plurality of output drain paths and outputs the plurality of drain values only to the selected at least one output drain path, and
• wherein each activation group, corresponding to the each row, of the plurality of activation groups receives the plurality of drain value sets and performs a plurality of activation function calculations based on the plurality of drain value sets.