A UART, or Universal Asynchronous Receiver-Transmitter, is a hardware communication protocol used for asynchronous serial communication.

UART Transmission (TX) and Reception (RX) are the serial communication processes for sending and receiving data over a UART interface, respectively.

An ultrasonic sensor is a device that uses ultrasonic sound waves to measure the distance to an object.

Reduction of voltage supplied to a computer component to improve efficiency.

An Uninterruptible Power Supply (UPS) is a device providing emergency power when the main power source fails.

A USB drive is a portable flash memory storage device with USB interface for data transfer.

USB Standards are technical specifications for Universal Serial Bus interfaces controlling data transfer and power delivery.