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Multiplexers: Structure, Operation and Applications

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Basic Concepts: Multiplexer selects one input from multiple signals and directs it to a single output
A multiplexer requires N select lines for 2N inputs
Symbol is a trapezoid with multiple input lines and select lines
Implementation: 2x1 multiplexer uses NOT, two AND, and one OR gate
Can be implemented using transmission gates as switches
Analog multiplexers use transmission gates for signal routing
Logic Implementation: Basic logic gates can be created using 2x1 multiplexer
Higher-order multiplexers can be built from lower-order ones
Select lines are split between multiplexers
Applications: Consolidates audio and video data into single transmission lines
Manages computer memory capacity efficiently
Enables multiple calls in communication networks