$($b$)$ Write down the minimum expressions for the outputs by inspection of the truth table. $($Hint: Try to match output columns in the table

with input columns. Use the following as necessary: $A,B,C,$ and $D.$ Simplify your answer completely.$)$

$s=$

$T=$

$U=$

$v=$

$W=$

$x=$

$Y=$

$z=$A combinational circuit has four inputs $(A,B,C,D),$ which represent a binary$-$coded$-$decimal digit.

$S,T,U,V,$ and $W,x,Y,Z.$ Each group represents a $BCD$ digit. The output digits represent a decin

the input number. For example, if ABCD$=0011,$ the outputs are STUV$=0001$ and $WxYZ=0011$

as inputs.

$($b$)$ Write down the minimum expressions for the outputs by inspection of the truth table. $($Hint: