What is a key feature of a digital storage oscilloscope?

A key feature of a digital storage oscilloscope is its use of micro processing and memory for signal analysis. This capability allows the oscilloscope to capture, store, and manipulate waveforms for more in-depth analysis than traditional analog scopes could provide. By employing digital technology, these oscilloscopes can perform various functions such as triggering, measuring, and displaying signals on a digital screen with greater precision and flexibility.

Unlike older analog oscilloscopes, which rely on cathode-ray tubes and continuous signal display, digital storage oscilloscopes utilize sampled data stored in memory. This enables the user to freeze and review signals at various time intervals, which is particularly beneficial when analyzing transient or high-speed signals. Additionally, the digital processing allows for advanced features such as waveform averaging, mathematical operations, and sophisticated triggering options, enriching the analysis experience.

The other options do not accurately represent the capabilities or features of digital storage oscilloscopes, highlighting their significance in modern electronic testing and troubleshooting.