$2.$test the comparator chip, and document these:

a$.$Investigate what happens when pins $2,3,4$ float, that is they are not connected to

anything.$$

b$.$Investigate the function of this chip by using two two$-$bit binary

numbers W $($w$1$ w$0)$ and X $($x$1$ x$0).$

$3.$Design a $4-$bit equality detector that has eight input lines and one output line. The

circuit receives as input two $4-$bit binary numbers, and it outputs a logic one

whenever the $2$ numbers are $($equal bit by bit$).$