What is another term commonly used for a DC signal?

The term commonly used for a DC signal is "current signal." A direct current (DC) signal represents an electric current that flows consistently in one direction, distinguishing it from alternating current (AC), which periodically reverses direction. In the context of DC signals, if you consider Ohm's law (V=IR), a steady voltage across a resistive load will produce a constant current, thereby categorizing it as a current signal.

Although "voltage signal" and "analog signal" may seem related, they do not specifically define a DC signal. A voltage signal can refer to both AC and DC signals and does not imply a steady state as a DC signal does. Similarly, while analog signals can include DC as a type of signal, the term is broader and includes any signal that varies continuously over time, including AC signals. "Pulsed signal" refers to a form of signal that changes between high and low states but does not define the steady nature of DC signals, which maintain a constant level without fluctuations.