Let's start our neural network adventure with a perceptron. A perceptron is a single neuron that performs all the computations. It is a very simple model, but it forms the basis of building up complex neural networks. The following is what it looks like:
![](https://static.packt-cdn.com/products/9781789808452/graphics/assets/8440d6ab-95a9-4726-b577-2d58255b8837.png)
The neuron combines inputs using different weights, and it then adds a bias value to compute the output. It's a simple linear equation relating input values to the output of the perceptron.