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diff --git a/462/CH2/EX2.10.a/ex_2_10_a.pdf b/462/CH2/EX2.10.a/ex_2_10_a.pdf
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diff --git a/462/CH2/EX2.10.a/ex_2_10_a.sce b/462/CH2/EX2.10.a/ex_2_10_a.sce
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+//example 2.10(a)//
+//find 2's complement of binary number//
+clc
+//clears the window//
+clear
+//clears all the existing variables//
+x=01001110
+//the number//
+xd=bin2dec('01001110')
+//binary to decimal conversion//
+xc=bitcmp(xd,8)
+//one's complement of the number//
+xp=xc+1
+xc1=dec2bin(xp)
+//2's complement of the number//
+disp('2s complement of 01001110 is : ')
+disp(xc1)
+//answer in 2's complement form//
+\ No newline at end of file