Automotive electronics can be divided into various categories, such as engine, transmission, chassis, active safety, driver assistance, passenger comfort, entertainment systems, and electronic integrated cockpit (EIC) systems. Each of these systems has a number of sensors that measure various parameters. The ECU opens and closes various valves and deactivates or activates certain functions in the car based on the feedback from theses sensors. Some of the sensors that are commonly found in almost all modern cars are temperature sensors, pressure sensors, angle sensors, position sensors, speed sensors, mass airflow sensor, exhaust oxygen sensor, spark knock sensor, anti-lock brake (ABS) sensor, seat belt sensor, windshield cracked sensor, door ajar sensors, steering wheel sensor, crash sensors, etc.

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