Which item is a computer input sensor?

A computer input sensor in automotive systems is a component that provides data to the vehicle's engine control unit (ECU) for processing and analysis. Each of the items listed serves this purpose by measuring specific parameters that the ECU uses to make decisions affecting engine performance, fuel efficiency, and emissions control.

The throttle position sensor measures the angle of the throttle plate and helps the ECU determine how much air is entering the engine, allowing it to adjust fuel delivery for optimal performance.

The RPM (revolutions per minute) sensor, often a part of the crankshaft or camshaft position sensor system, provides the ECU with information on the engine speed, which is crucial for timing adjustments and fuel injection.

The engine coolant temperature sensor reads the temperature of the coolant, informing the ECU about the engine’s operating condition, which it uses to adjust fuel mixtures and engine timing for efficiency and performance.

Since each of these sensors provides vital input for the functioning of the ECU, indicating their collective role as computer input sensors justifies why the correct answer encompasses all of them.