SECTION I-10: 2's Complement of Binary Number

To get the 2's complement of a Binary number, invert all the bits and then add 1 to the result. Inverting the bits is simply a matter of changing all 0's to 1's and 1's to 0's. This is called the 1's complement. Example is demonstrated below.

 

Take the 2's complement of 10011101
10011101 Binary Number
01100010 1's Complement
+          1  
01100011 2's Complement

 

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