Simplify using Boolean Theorems

$y=(\frac{?}{\text{b}\text{a}\text{r}}(C)\frac{+}{b}ar(D))\frac{+}{b}ar(A)\frac{C}{b}ar(D)+\frac{A}{b}ar\frac{B}{b}ar(C)\frac{+}{b}ar\frac{A}{b}ar(B)CD+A\frac{C}{b}ar(D)$

$Y=(C+O)+$ACD$+$ABC$+$ABCD$+$ACO

For each of the following $K-$maps, determine the minimum expression $[4$

Marks$]$

$($a$)$

$($b$)$

For the following circuit

a$)$ Determine the output expression for each gate

$[2$ Marks$]$

b$)$ Generate the truth table showing the intermediate and final outputs. $[3$ Marks$]$

c$)$ Simplify the output expression so that it is expressed in basic gates: