Addition and Subtraction

• Examples, n=4 (OVERFLOW)

  • 0110+ 6ten
  • 0111 7ten
  • ------- ------
  • 1101 = -8+4+1 = -3ten

• Subtraction

  • 0111-0110 =
  • 0111+1010 (two’s complement) =
  • 0001 = 1ten

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