Logic Analyzer

A logic analyzer is an advanced diagnostic tool that is used to diagnose digital signals. Some are computer-based and connect to the computer via USB port, and many of these are quite inexpensive. Others that have vastly more capability are standalone devices similar to oscilloscopes and costing many thousands of dollars. Some oscilloscopes may also have built-in logic analyzer capability, too.

Basically, the analyzer has the ability to track multiple signals simultaneously and represent them on a screen for visual analysis and measurement.