Adapters are devices that allow different types of equipment to connect and communicate with each other. They can convert electrical signals, change plug shapes, or adjust voltage levels, making it possible to use various gadgets together. For example, a USB adapter can enable a smartphone to connect to a computer. In everyday life, adapters are commonly used for charging devices or connecting audio equipment. A power adapter transforms electrical current from a wall outlet to a suitable level for a laptop, while an audio adapter can link headphones to a smart TV. These tools enhance compatibility and functionality across different technologies.