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diff --git a/45/CH10/EX10.12/example_10_12.sce b/45/CH10/EX10.12/example_10_12.sce
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+//example 10.12
+clc
+clear
+//pro= ('Enter the value to whic counter should progress:');
+pro =11; // given input 
+q=1;
+aa=pro;
+for i=1:4             //converting the given number in to binary 
+    x=modulo(aa,2);
+    b(q)=x;
+    aa=aa/2;
+    aa=floor(aa);
+    q=q+1; 
+end
+           
+bi=' ';   // then printing the NAND gate inputs 
+for i=1:4
+    if i==1 & b(i)==1 then
+        bi=strcat([bi 'Qa']);
+    elseif i==1 & b(i)== 0 ;
+        bi=strcat([bi 'Qa''']);   
+    end
+    if i==2 & b(i)==1 then
+        bi=strcat([bi 'Qb']);
+    elseif i==2 & b(i)== 0 ;
+        bi=strcat([bi 'Qb''']);   
+    end
+    if i==3 & b(i)==1 then
+        bi=strcat([bi 'Qc']);
+    elseif i==3 & b(i)== 0 ;
+        bi=strcat([bi 'Qc''']);   
+    end
+    if i==4 & b(i)==1 then
+        bi=strcat([bi 'Qd']);
+    elseif i==4 & b(i)== 0 ;
+        bi=strcat([bi 'Qd''']);   
+    end
+
+end
+disp('The NAND gate inputs must be :'); 
+disp(bi)
+