What is the primary function of the Multiplexer (MUX) in communication systems?

The primary function of a multiplexer (MUX) in communication systems is to combine multiple signals into a single signal for transmission over a single medium. This process is crucial because it allows for efficient use of bandwidth, enabling various data streams to share the same communication channel without interference. By selecting between multiple input signals and sending them through one output line, the MUX helps optimize network infrastructure and enhance overall data transmission effectiveness.

MUX is particularly valuable in environments where multiple channels need to be transmitted simultaneously, as it reduces the amount of physical resources required, such as cables and ports. Utilizing a multiplexer contributes to the cost-effectiveness and efficiency of the communication systems, making it a foundational element in modern telecommunications.