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+//Example 3.5: Reduce expression using k-map 
+clc; //clears the window
+clear; //clears all existing variables
+//Mapping the expression//
+disp('       A''B'' A''B  AB  AB'' ')
+disp('C''D''    1        1      ')
+disp('CD''              1    ')
+disp('CD      1    1   1   1')
+disp('CD''                    ')
+disp(' From the map, high outputs are for 0,3,7,12,13,14,15 ') //given logic equation
+a=[0 0 0 0;0 0 1 1 ;0 1 1 1;1 1 0 0 ;1 1 0 1;1 1 1 0;1 1 1 1]
+disp(a)
+for i=1: 7
+    if a(i,1)==1 then
+       b(i,1)='A'
+   else
+       b(i,1)='A'''
+    end
+    if a(i,2)==1 then
+       b(i,2)='B'
+   else
+       b(i,2)='B'''
+    end
+     if a(i,3)==1 then
+       b(i,3)='C'
+   else
+       b(i,3)='C'''
+    end
+    if a(i,4)==1 then
+       b(i,4)='D'
+   else
+       b(i,4)=' D'''
+    end
+end
+disp(' Evaluating expression from truth table and map ')
+x1=strcat([ b(1,1),b(1,2),b(1,3),b(1,4) ])
+x2=strcat([ b(2,1),b(2,2),b(2,3),b(2,4) ])
+x3=strcat([ b(3,1),b(3,2),b(3,3),b(3,4) ])
+x4=strcat([ b(4,1),b(4,2),b(4,3),b(4,4) ])
+x5=strcat([ b(5,1),b(5,2),b(5,3),b(5,4) ])
+x6=strcat([ b(6,1),b(6,2),b(6,3),b(6,4) ])
+x7=strcat([ b(7,1),b(7,2),b(7,3),b(7,4) ])
+x=[x1"+",x2"+",x3"+",x4"+",x5"+",x6"+",x7]
+disp(x)
+//Expression is displayed//
+disp('The reduced expression using boolean algebra')
+disp('F = A''B''C''D'' + ABC'' + CD')
+