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Multiplexer
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===Chaining multiplexers and mux trees=== Larger Multiplexers can be constructed by using smaller multiplexers by chaining them together in what are called "mux trees". For example, an 8:1 multiplexer can be made with two 4:1 multiplexers and one 2:1 multiplexer. The two 4:1 multiplexer outputs are fed into the 2:1 with the selector pins on the 4:1's put in parallel giving a total number of selector inputs to 3, which is equivalent to an 8:1.
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