What is a Multiplexer?

A multiplexer (MUX) is an electronic circuit or IC that selects one signal from multiple input signals and routes it to a single output. This allows for the efficient transmission of multiple signals over a single transmission line, improving data transfer efficiency. The multiplexer uses control signals to determine which input signal will be passed to the output. For example, a 2:1 multiplexer switches between two input signals and outputs one, while a 4:1 multiplexer selects one signal from four inputs. Multiplexers are widely used in digital circuits, communication systems, and computer systems to manage data efficiently and improve system performance.

Application of Multiplexer

✅Communication Systems
In communication systems, multiplexers are used to combine multiple data streams into one signal for transmission. For example, in telephone lines, a multiplexer allows multiple voice calls to be transmitted simultaneously over a single line.
✅Computer Systems
In computer systems, multiplexers are used to manage multiple data buses or sensor inputs. The multiplexer selects the appropriate signal and sends it to a single output, improving data management efficiency within the system.
✅Video Equipment
Multiplexers are used in video equipment to switch between multiple video signals and display them on a single screen. For example, in television broadcasting or camera switching, a multiplexer allows different video sources to be shown on the same display.

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