A transceiver is a device that can both transmit and receive signals, typically used in communication systems. It combines the functions of a transmitter, which sends out signals, and a receiver, which captures incoming signals. Transceivers are commonly found in devices like radios, telephones, and computer networks, enabling two-way communication. In wireless communication, transceivers play a crucial role in connecting devices over distances. For example, in Wi-Fi networks, a transceiver allows routers to send data to laptops and smartphones while also receiving data from them. This bidirectional capability makes transceivers essential for modern communication technologies.