SPI
SPI (Serial Peripheral Interface) is a synchronous serial communication protocol used for short-distance communication between microcontrollers and peripheral devices such as sensors, memory chips, and displays. It operates in a master-slave architecture with full-duplex communication, using separate data lines for transmission and reception. SPI is known for its simplicity, high speed, and lack of addressing overhead, making it ideal for embedded systems and hardware interfacing.
Developers should learn SPI when working with embedded systems, IoT devices, or hardware projects that require efficient communication between a microcontroller and multiple peripherals. It is particularly useful for applications needing high-speed data transfer, such as reading from sensors, writing to flash memory, or driving displays, due to its low latency and straightforward implementation compared to other protocols like I2C.