Complement:
Subtraction of
two numbers in a computer complicated and expensive in terms of circuit,
especially for repeated borrowing from one column to another. Complements can
be used to reduce from subtraction to addition. It avoids the possibility of repeated
borrowing from one column to another and hence, borrow circuits are eliminated
and cost is reduced.
There are
two types of complements:
- 1’s Complement.
- 2’s Complement.
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