A universal asynchronous receiver/transmitter is a type of "asynchronous receiver/transmitter", a piece of computer hardware that translates data between parallel and serial forms. UARTs are commonly used in conjunction with other communication standards such as EIA RS-232.
Features:

• Independent receiver clock input.
• MODEM control functions (CTS, RTS, DSR, DTR, RI, and DCD).
• Even, odd, or no-parity bit generation and detection.
• 1 or 2-stop bit generation.
• Baud generation (DC to 1.5M baud).False start bit detection.
• Programmable baud generator divides any input clock by 1 to (216 b 1) and generates the 16 c clock.
• Independently controlled transmit, receive, line status, and data set interrupts.

Applications:

• Telecommunication
• Ground Positioning System.
• GIS.