Universal Asynchronous Receiver/Transmitter (UART) is a specialized skill related to computer hardware and electronics. A UART is a device that facilitates communication between computers or microcontrollers and serial devices such as sensors, actuators, or other types of hardware. The skill involves understanding the operation and configuration of UART devices, including their timing, protocols, and different modes of operation. It also requires knowledge of programming and interfacing techniques to set up and interact with UART devices in a given system.