Which term describes a continuous signal?

• A. Digital
• B. Analog
• C. For Loop
• D. Parameter

Answer: (B)

A continuous signal is defined at every moment in time and can vary smoothly without jumps. The term that describes this kind of signal is analog, because analog signals are continuous in time (and typically in amplitude) so their values can change gradually. Digital signals, on the other hand, are defined only at specific moments and take on a limited set of discrete levels, which is why they’re not continuous. Real-world examples of analog signals include sound waves in the air or voltage levels that change smoothly over time. In contrast, terms like For Loop or Parameter are programming concepts and don’t describe how a signal changes over time.