BytesOfProgress

Wiki

Binary +/-

Truth Tables

  Subtraction:

  0 - 0 = 0, Transfer to next bit = 0
  0 - 1 = 1, Transfer to next bit = 1
  1 - 0 = 1, Transfer to next bit = 0
  1 - 1 = 0, Transfer to next bit = 0

  Addition:

  0 + 0 = 0, Transfer to next bit = 0
  0 + 1 = 1, Transfer to next bit = 0
  1 + 0 = 1, Transfer to next bit = 0
  1 + 1 = 0, Transfer to next bit = 1

  1 + 1 + 1 = 1, Transfer to next bit = 1

Subtraction example: 101010 - 011001

Addition example: 101010 + 011001

back