Which concept uses a series of discrete values, often illustrated by a square wave?

Which concept uses a series of discrete values, often illustrated by a square wave?

• A. Analog signaling
• B. Signaling
• C. Digital signaling
• D. Packet technology

Answer: (C)

Digital signaling uses discrete voltage levels to encode information, usually two levels that represent 0 and 1. When you plot a digital signal over time, the voltage stays constant at each level and switches abruptly, producing a square-like waveform. This contrasts with analog signaling, which changes smoothly across a continuous range of values. The term signaling by itself is broad and can refer to either analog or digital, so it doesn’t specify the discrete, binary nature described. Packet technology is about how data is organized for transport, not the waveform of the signaling itself. So the description of discrete values and a square wave best fits digital signaling.

Digital signaling uses discrete voltage levels to encode information, usually two levels that represent 0 and 1. When you plot a digital signal over time, the voltage stays constant at each level and switches abruptly, producing a square-like waveform. This contrasts with analog signaling, which changes smoothly across a continuous range of values. The term signaling by itself is broad and can refer to either analog or digital, so it doesn’t specify the discrete, binary nature described. Packet technology is about how data is organized for transport, not the waveform of the signaling itself. So the description of discrete values and a square wave best fits digital signaling.