Product-sum calculator, neuromorphic device, and usage of product-sum calculator

摘要

The product-sum calculation unit (1) includes a product calculation unit (10) and a sum calculation unit (11), and the product calculation unit (10) includes a plurality of product calculation elements (10AA, 10AB) that are resistance change elements. ) And at least one reference element (10AMAX, 10AMIN), and the sum operation unit (11) includes an output detector (11A) that detects at least a total value of outputs from the plurality of product operation elements, Each of the plurality of product computing elements has a magnetic resistance having a magnetization free layer having a domain wall, a magnetization fixed layer having a fixed magnetization direction, and a nonmagnetic layer sandwiched between the magnetization free layer and the magnetization fixed layer. The reference element is an effect element, and the reference element is a reference magnetoresistive effect element having a magnetization free layer having no domain wall.