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+//Example 3.17: 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    1     ')
+disp('cd                1    1')
+disp('cd''     1              1')
+disp(' From the map, high outputs are for 0,1,5,7,8,10,14,15') //given logic equation
+a=[0 0 0 0;0 0 0 1;0 1 0 1;0 1 1 1;1 0 0 0;1 0 1 0 ;1 1 1 0;1 1 1 1]
+disp(a)
+for i=1: 8
+    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) ])
+x8=strcat([ b(8,1),b(8,2),b(8,3),b(8,4) ])
+x=[x1"+",x2"+",x3"+",x4"+",x5"+",x6"+",x7"+",x8]
+disp(x)
+//Expression is displayed//
+disp('The resulting two possible solution are')
+disp('F = a''c''d'' + bc''d + acd + b''cd''')
+disp('F = a''b''d'' + a''bc'' + abd + ab''c')