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Digital ElectronicsNumber Systems & Codes

The 1’s complement of binary 1010 is?

  • A0101
  • B1011
  • C0110
  • D1101
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Correct Answer: A. 0101
Explanation: The 1's complement is obtained by changing every 1 to 0 and every 0 to 1: 1010 becomes 0101.
Reference: Binary complement fundamentals
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