2 files changed, 28 insertions, 0 deletions
diff --git a/3860/CH3/EX3.21/EX3_21.sce b/3860/CH3/EX3.21/EX3_21.sce
new file mode 100644
index 000000000..fdfd72f43
--- /dev/null
+++ b/3860/CH3/EX3.21/EX3_21.sce
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+//Example 3.21: Reduce expression using k-map with dont cares.
+clc; //clears the window
+clear; //clears all existing variables
+//Mapping the expression//
+disp('       W''X'' W''X  WX  WX'' ')
+disp('Y''Z''    X    1   1      ')
+disp('YZ''     X        1   1 ')
+disp('YZ      X    1       1')
+disp('YZ''     X            ')// the k-map is displayed.
+disp('g1 = x''z + w''yz + w''y''z'' + wxy''')
+disp('g2 = x''z + w''yz + xy''z'' + wxy''')
+disp('g3 = x''z + w''yz + xy''z'' + wy''z')
diff --git a/3860/CH3/EX3.21/Ex3_21.txt b/3860/CH3/EX3.21/Ex3_21.txt
new file mode 100644
index 000000000..646ae9aec
--- /dev/null
+++ b/3860/CH3/EX3.21/Ex3_21.txt
@@ -0,0 +1,16 @@
+ 
+        W'X' W'X  WX  WX' 
+
+ Y'Z'    X    1   1      
+
+ YZ'     X        1   1 
+
+ YZ      X    1       1
+
+ YZ'     X            
+
+ g1 = x'z + w'yz + w'y'z' + wxy'
+
+ g2 = x'z + w'yz + xy'z' + wxy'
+
+ g3 = x'z + w'yz + xy'z' + wy'z
+\ No newline at end of file