You are given a design board with two input pins, a $6-$bit pin A and

a $6-$bit pin B and one $6-$bit output pin R$.$

Build a circuit that asserts the absolute value $|A-B|$ on $R.$ You will

need a $6-$bit $2-$to$-1$ multiplexer for your solution, which you will have

to build by yourself, since the use of the Plexer library is prohibited for

this exercise. You may, however, take the $6-$bit adder or subtractor from

Logisim's Arithmetic library to save you time, but remember that you

have already built one earlier. It is always a good idea to reuse your own

components since you know exactly how they work.