Negating a Number

• A simple technique for negating a number:

  • Invert each bit, and then add 1.

• Convert:-

  • 10110
    • : 01001 + 1 = 01010 = 2ten+8ten = 10ten
  • 1101
    • :0010 + 1 = 0011 = 1ten + 2ten = 3ten
  • 0011
    • 1100 + 1 = 1101 = -8ten+4ten+1ten = -3ten

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