EEE$2110$

Hw#$4$

Draw a logic diagram using only two$-$input NOR gates to implement the following function: $F(A,B,C,D)=(Ao+B{)}^{\text{'}}.(Co+D)$

Hint: $(Ao+B{)}^{\text{'}}*(Co+D)=(A{B}^{\text{'}}+A^{\text{'}}B{)}^{\text{'}}(C{D}^{\text{'}}+C^{\text{'}}D)$

$2.$ The adder$-$subtractor circuit given below has the following values for mode input M and data inputs A and B $.$

$\backslash$table$[[,M,A,B$