A pressure sensor is a device that measures the pressure of gases or liquids. It converts the physical pressure into an electrical signal, which can be read and interpreted by various systems. These sensors are commonly used in industries like automotive, aerospace, and healthcare to monitor and control processes, ensuring safety and efficiency. In everyday life, you might find pressure sensors in items like car tires and smart home systems. For example, they help maintain the correct air pressure in tires, improving fuel efficiency and safety. In medical devices, pressure sensors can monitor blood pressure, providing critical data for patient care.