What is the main function of a digital oscilloscope?

The main function of a digital oscilloscope is to convert signals into digital formats for storage and analysis. This capability allows users to visualize, record, and manipulate waveforms for detailed examination of electrical signals over time. By converting analog signals into digital data, a digital oscilloscope can store vast amounts of information, making it easier to review and analyze complex signals.

This digital representation enhances measurement precision and facilitates various calculations and graphical displays, providing insights into the behavior of electrical signals. Digital oscilloscopes typically offer features such as triggering, automatic measurements, and the ability to save or share data conveniently, which are not available with analog oscilloscopes.

The other answer choices reflect limitations of what a digital oscilloscope is designed to do. For example, providing only analog voltage readings fails to recognize the digital processing capabilities. Measuring only time duration between pulses ignores the oscilloscope's broader range of functions, including amplitude and frequency measurement. Analyzing static resistance pertains to multimeters rather than oscilloscopes, which are primarily focused on dynamic signal analysis.