A Physical neural network is a selected type of neuromorphic hardware that relies on electrically adjustable elements, including memristors, to emulate the purpose of neural synapses. ^ The definition "without remaining explicitly programmed" is commonly attributed to Arthur Samuel, who coined the expression "machine learning" in 1959, nevertheless the phrase https://hakaja.com/business-economy/new-step-by-step-map-for-learn-typing_71973