Hi, I need to create a 4-1 multiplexer with a 2 bit selector and 16 bit input/output values. Would this be the right circuit for this:

 

That has 1 bit input/output values. How are you planning to use this circuit in order to get 16 such values?

 

Would you just create 4 of those and connect them together? That would give 16 bit inputs right?

 

How would you use four of them?

How many outputs would that give you?

You need to take a step back and be sure you know what it is you are trying to implement before you try to implement it.

First step in the problem solving process: make sure you understand the problem you are trying to solve. It's also often the hardest part of the problem solving process.