Indicators/generators are listed as part of which electronics category?

• A. Input Elements
• B. Working Elements
• C. Processing Elements
• D. Control Elements

Answer: (A)

In this classification, devices are grouped by their role in bringing information into or interacting with the system. Input elements are the parts that introduce signals or information into the measurement/control path. A signal generator provides a known excitation to the system, supplying information that starts or tests the response. An indicator presents information about the system’s signal to the observer or to subsequent stages, effectively feeding information into the measurement/interpretation path rather than performing processing or control. Since both indicators and generators are about introducing or conveying signal information rather than modifying or regulating it, they fit with input elements.