The Arm Cortex-M4 is a 32-bit RISC processor core developed by Arm Holdings, a British semiconductor and software design company. It is part of the Cortex-M series, which is widely used in embedded systems for industrial, automotive, consumer, and IoT applications. The Cortex-M4 core features a Floating-Point Unit (FPU) and DSP capabilities, making it suitable for real-time control and signal processing tasks. It is licensed to various chip manufacturers globally, enabling them to integrate the core into their microcontrollers (MCUs). These MCUs are commonly used in devices requiring low power consumption and high performance, such as sensors, motor controls, and smart home devices.