UART
UART (Universal Asynchronous Receiver/Transmitter) is a hardware communication protocol that enables serial data transmission between devices without a shared clock signal, using start and stop bits for synchronization. It is commonly implemented in microcontrollers, embedded systems, and peripherals like GPS modules or sensors to facilitate simple, point-to-point communication over two wires (TX and RX).
Developers should learn UART for embedded systems and IoT projects where low-cost, straightforward serial communication is needed between microcontrollers, sensors, or debugging tools like serial monitors. It is essential for tasks such as firmware debugging, data logging, and interfacing with legacy hardware due to its simplicity and widespread support in hardware like Arduino, Raspberry Pi, and ESP32.