ANSWER ALL QUESTIONS.

Start the LogicGates app.

Build a new circuit that will be a larger version of the one you created in Exercise $2.$ There will be

four switches. Assign them the labels $"$A$1,""$A$0,""$B$1,"$ and $"$B$0."($Note: A$1$ is a way of specifying $A_1$

when you can't really have a subscript.$)$

The circuit will have two XOR gates, two NOT gates, an output, and a mystery box, arranged as

shown below:

The purpose of this circuit is to compare two $2-$bit binary numbers to see if they are the same

number. For example, if $A($that is$,$ the two$-$digit number comprised of $A_1{A}_0)$ is $10$ and $B($the two$-$digit

number $B_1{B}_0)$ is $10,$ then the output box will display $1.$ If $A$ is $10$ but $B$ is $11,$ the output box will show $0,$

which is Boolean$-$ese for "false."

Connect the XOR boxes to the proper input switches. $($Just think about how you compare two

numbers for equality. What digits do you compare?$)$

The "mystery gate" is either AND or OR$.$ You can either experiment until you get the right answer, or$,$

better for your brain $($and more impressive to your teacher$),$ you can reason out which it should be$.$

Take a screenshot showing your circuit getting the correct result.