Problem $1(3$ pts$)$

Draw the truth tables for the $6$ two$-$input digital logic functions that we have discussed in class:

$($AND$,$ NAND, OR$,$ NOR, XOR, and XNOR$).$ Consider the outputs of each function as $4$ distinct

binary digits. In ECE$331$ we learned that $n$ bits can represent $2^n$ different states, so $2^4=16.$

Create a table showing all $16$ possible output combinations with two inputs, and label each

output as a function, variable, or a combination of variables and functions. Example: