Microelectromechanical Systems, or MEMS, are tiny devices that combine mechanical and electrical components at a microscopic scale. They are typically made using semiconductor fabrication techniques, allowing for the integration of sensors, actuators, and electronics on a single chip. MEMS are used in various applications, including accelerometers in smartphones, pressure sensors in automotive systems, and microphones in hearing aids. These systems can perform complex functions while being small and lightweight. Their ability to sense and respond to physical changes makes them valuable in industries such as automotive, medical, and consumer electronics. As technology advances, MEMS continue to evolve, enabling new innovations and applications.