What is the difference between simplex and duplex communication?

The correct response highlights that simplex communication is characterized by one-way transmission, meaning that information flows in a single direction only. For example, in a simplex system, one party transmits while the other receives, but the receiver cannot respond or send information back to the transmitter. This can be likened to a television broadcast, where signals are sent from the station to viewers without any return communication.

In contrast, duplex communication allows for two-way interaction, meaning both parties can send and receive messages. This can be illustrated by a telephone conversation, where both participants can speak and respond to each other in real time. Duplex systems can be further categorized into half-duplex, where communication can flow in both directions but not simultaneously (like a walkie-talkie), and full-duplex, where messages can be exchanged in both directions at the same time.

Understanding this distinction is essential, as it directly impacts the design and application of communication systems in various technologies and industries.