Binary Arithmetic Using Complement Codes

v Example

4) X = 23 à 0 1 0 1 1 1 +

Y = -18 à 1 0 1 1 1 0

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0 0 0 1 0 1 = 5

-18 -- binary representation: 1 0 0 1 0

-- 1^st complement: 0 1 1 0 1

-- 2^nd complement: 0 1 1 1 0