Basics of UART:
UART stands for Universal Asynchronous Receiver Transmitter. UART is used for serial communication between peripherals and other devices. UART takes bytes of data and transmits it through wire to another UART receiving end. UART device contains shift registers to convert parallel data into serial data and vice-versa. Data in UART is transferred serially as parallel transmission requires multiple wires.
UART is asyncronous as no extra clock signal is required for synchronization. Synchronization is acheived by what is called as Baud Rate.
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