Simplex communication is a name for a type of communication circuit. There are two (contradictory) definitions that have been used for the term. When one definition is used for "simplex", then the other definition is actually referred to as half duplex.
One way only – the most common definition
According to the ANSI definition, a simplex circuit is one where all signals can flow in only one direction. These systems are often employed in broadcast networks, where the receivers do not need to send any data back to the transmitter/broadcaster.
Examples according to ANSI definition
- Commercial radio broadcast (not walkie-talkies, etc.)
- Television broadcast
- Internet multicast
- One-way communications from a launcher to a guided missile, where the launcher (airplane, ship, etc.) sends commands to the missile, but does not receive any information sent back.
See also
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