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. See our products Augmented reality (AR) is a technology that superimposes digital content onto the real world, using devices such as smartphones, tablets, and glasses. AR is used in many applications, such as gaming, education, and retail. Popular AR platforms include Apple ARKit, Google ARCore, and Microsoft.