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Multiplexers & DeMultiplexers

→ Multiplexers:

A multiplexer, often referred to as a “mux,” is a digital circuit that selects one of several input signals and forwards it to a single output line.

• It’s used to combine multiple data sources into a single line, which simplifies data transmission and control in various digital systems.
• They are also used for signal routing, data selection, and communication channel switching.

• The key components of a multiplexer are the input lines, the control inputs (often called “select lines”), and the output line.

→ Demultiplexers:

A demultiplexer, commonly referred to as a “demux,” is a digital circuit that takes a single input signal and distributes it to one of several possible output lines based on the value of control inputs.

• They essentially perform the opposite function of multiplexers, which combine multiple inputs into a single output.

• They are used to route a single input to a specific output line, making them useful for applications such as data distribution, memory interfacing, and address decoding in digital systems.

• A demultiplexer typically has one input line, multiple output lines, and control inputs that determine which output line receives the input signal. The number of control inputs corresponds to the number of possible output lines, and the value of these control inputs determines the selection of the output line.

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