Question 7.18: Given function G (D,C,B,A) = ∑ (1, 4 , 6, 7, 8, 9, 10, 11, 1...

Using a 4-variable map, we write the unity minterms according to the given function G. We encircle groups of adjacent minterms as shown in Figure 7.12. Pay close attention to the choices made grouping adjacent minterms. The groupings shown provide the least number of terms and the least number of variables per term.

The choices made lead to the following SOP simplification:

G (D,C,B,A) =\bar{C} \bar{B}A +\bar{D} C \bar{A} +CBA+D\bar{C} (7.23)