Q. When two 16-input multiplexer drive a two input multiplexer, what will be the output.

A
2-input multiplexer
B
4-input multiplexer
C
16-input multiplexer
D
32-input multiplexer
Solution:
  • 16+16=32

  • Thus we have 32-input multiplexer.

  • If two 16-input multiplexers drive a two-input multiplexer, and all inputs are connected correctly, the output of the two-input multiplexer will be the 32nd input of the 16-input multiplexers.
  • The selection inputs of the two 16-input multiplexers determine which input is propagated to the output of the two-input multiplexer. By selecting the 32nd input on both 16-input multiplexers, that value will be passed through the two-input multiplexer to its output.
  • Therefore, if all inputs are connected properly and the selection inputs are set accordingly, the output of the two-input multiplexer will be the 32nd input.
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