What does a digital engine monitor provide for the pilot?

A digital engine monitor is designed to provide real-time performance data about various engine parameters, which is crucial for the pilot's awareness of the engine's operating condition. This data typically includes information on cylinder head temperatures, exhaust gas temperatures, oil temperatures, and engine RPM, among other metrics. By constantly displaying this information, the digital engine monitor allows the pilot to make informed decisions regarding engine management, performance optimization, and fuel efficiency.

Being able to access real-time performance data helps in detecting any abnormal trends in engine behavior that may indicate potential issues before they develop into critical failures. This increases safety and enhances operational efficiency during flight. The other options listed, while potentially useful, do not accurately capture the primary function and significant benefit that a digital engine monitor provides to pilots.