An oscilloscope is an electrical testing device that is used to visualize and analyze electrical signals in a waveform. There are various synonyms for an oscilloscope depending on its specific use and application. Among the most commonly used synonyms are scope, oscillograph, waveform monitor, and digital oscilloscope. These devices are essential in fields such as electronics, telecommunications, and medicine to detect and diagnose abnormal electrical signals. The use of an oscilloscope allows for a real-time view of signals, such as voltage or current, and further analysis of the waveform. Oscilloscopes come in various shapes and sizes, and modern digital oscilloscopes have become more affordable and feature-packed with many advanced features.