As given in class what is the definition of a selector multi

As given in class, what is the definition of a selector (multiplexer)? It begins with… “A selector (multiplexer) is a device…”

What is the relationship between the number of inputs, the number of select lines, and the number of outputs?

The truth table for a selector is slightly different than the truth tables for other simple devices, such as a decoder or a comparator. Why is this?

What are some of the real-world applications of selectors?

What part, if any, do you think a selector will have in the final controller design for your Krisys Robot?

O₀ =

Using the new equations, alter the circuit from task 1 to include an active low enable. Once this design is complete, compile and test the design on the Basys2 board, and verify your results against the truth table. Lastly, make sure to take a screenshot of the circuit for your report.

Solution

A selector (multiplexer) is a device selcting the output from n numbe of inputs depends upon the selectlines.

if selectlines are n,and the number of inputs to selector is 2ⁿ and it have one output.

trtuh table for Active high 4:1 selector:

Boolean equation:

O₀=S\'₀S\'₁I₀+S₀S\'₁I₁ +S\'₀S₁I₂+S₀S₁I₃

_{Truthtable for Active Low enable Active High selector:}

Boolean Equation

  O₀=E\'(S\'₀S\'₁I₀+S₀S\'₁I₁ +S\'₀S₁I₂+S₀S₁I₃ )