In communication, what is the difference between simplex and duplex signals?

Simplex communication is a type of signaling that allows for one-way communication only. In this mode, information flows in a single direction, meaning that one party can transmit a message while the other can only receive it. This format is often used in situations where feedback or two-way interaction isn't necessary, such as in broadcasting or certain types of alarm systems.

In contrast, duplex communication enables two-way communication, allowing both parties to send and receive messages, which is essential for interactive discussions or conversations, such as those found in most modern telecommunications systems. The distinction lies in the directionality of the communication: simplex is strictly one directional, whereas duplex facilitates reciprocal communication.

Thus, the statement highlighting that simplex allows for one-way communication accurately captures the unique characteristic of this mode.