In this paper, the authors explain about Artificial Neural Network (ANN). An artificial neural network is an interconnected group of nodes, akin to the vast network of neurons in a brain. each node represents an artificial neuron and an each node has a connection from the output of one neuron to the input of another. In computer science and related fields, artificial neural networks are models inspired by animal central nervous systems (in particular the brain) that are capable of machine learning and pattern recognition. They are usually presented as systems of interconnected \"Neurons\" that can compute values from inputs by feeding information through the network.