The internet of things (IoT) refers to the network of physical devices, vehicles, home appliances, and other objects that are connected to the internet and can exchange data. IoT is used in many applications, such as smart homes, wearable devices, and industrial automation. Popular IoT platforms include Arduino, Raspberry. Visit website A transistor is a semiconductor device that can amplify or switch electronic signals. It is composed of a semiconductor material, usually silicon, and is widely used in modern electronic devices.