Systems with a continuous variable signal are known as what?

Systems with a continuous variable signal are known as what?

• A. Digital electronics
• B. Analogue electronics
• C. Power electronics
• D. Logic electronics

Answer: (B)

Signals that vary smoothly over time and can take essentially any value are processed by analogue electronics. In analogue systems, the goal is to handle continuous-time, continuous-amplitude signals directly—amplifying, filtering, and shaping them without discretizing the values. Digital electronics, by contrast, works with discrete, quantized levels after sampling, so it’s not about continuous signals. Power electronics focuses on converting and controlling high power, which isn’t the defining feature here, and logic electronics centers on discrete logic operations. So when a system is described as handling a continuous variable signal, analogue electronics is the correct label.

Signals that vary smoothly over time and can take essentially any value are processed by analogue electronics. In analogue systems, the goal is to handle continuous-time, continuous-amplitude signals directly—amplifying, filtering, and shaping them without discretizing the values. Digital electronics, by contrast, works with discrete, quantized levels after sampling, so it’s not about continuous signals. Power electronics focuses on converting and controlling high power, which isn’t the defining feature here, and logic electronics centers on discrete logic operations. So when a system is described as handling a continuous variable signal, analogue electronics is the correct label.