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Embedded Tutorials on Instagram: "UART Interview Questions Part 1: What is UART? A UART (Universal Asynchronous Receiver/Transmitter) is a hardware communication module used for serial data exchange. It converts parallel data from the CPU into serial form for transmission and converts received serial data back into parallel form. It is asynchronous, meaning no separate clock signal is shared between devices. Instead, both ends must agree on a baud rate. A typical UART frame includes a start bit,