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diff --git a/45/CH10/EX10.9/example_10_9.sce b/45/CH10/EX10.9/example_10_9.sce
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+//example 10.9
+
+clc;
+clear;
+close;
+c = [0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0]; //taking the values for a mod -6 counter 
+q = [0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0];
+a = [0 0 0 0 1 1 1 1 0 0 0 0 0 0 0 0 1 1 1 1 0 0 0 0 0];
+b = [0 0 0 0 0 0 0 0 1 1 1 1 0 0 0 0 0 0 0 0 1 1 1 1 0];
+y1=q;
+y2=a;
+y3=b;
+y11p=1;
+y22p=1;
+y33p=1;
+y44p=1;
+cp=1;
+yf1p=1;
+for i=1:25    // making arrays to draw the output 
+    if y1(i)==1 then
+        for o=1:100
+        y11(y11p)=1;
+        y11p=y11p+1;
+        end
+    else
+        for o=1:100
+        y11(y11p)=0;
+        y11p=y11p+1;
+        end
+
+end
+if y2(i)==1 then
+        for o=1:100
+        y21(y22p)=1;
+        y22p=y22p+1;
+        end
+    else
+        for o=1:100
+        y21(y22p)=0;
+        y22p=y22p+1;
+        end
+
+end
+if y3(i)==1 then
+        for o=1:100
+        y31(y33p)=1;
+        y33p=y33p+1;
+        end
+    else
+        for o=1:100
+        y31(y33p)=0;
+        y33p=y33p+1;
+        end
+
+end
+if c(i)==1 then
+        for o=1:100
+        c1(cp)=1;
+        cp=cp+1;
+        end
+    else
+        for o=1:100
+        c1(cp)=0;
+        cp=cp+1;
+        end
+end
+
+end
+z=[2 2];   
+subplot(4,1,1); //ploting the out put 
+title('Timing Diagram');
+plot(c1);
+plot(z);
+ylabel('C');
+subplot(4,1,2);
+plot(y11);
+ylabel('Q');
+plot(z);
+subplot(4,1,3);
+plot(y21);
+ylabel('A');
+plot(z);
+subplot(4,1,4);
+plot(z);
+ylabel('B');
+plot(y31);