In elementary arithmetic a carry is a digit that is transferred from one column of digits to another column of more significant digits during a calculation algorithm. When used in subtraction the operation is called a borrow. It is a central part of traditional mathematics, but is often omitted from curricula based on reform mathematics, which do not emphasize any specific method to find a correct answer.
Other articles related to "carry, arithmetic":
... When speaking of a digital circuit like an adder, the word carryis used in a similar sense ... In most computers, the carryfrom the most significant bit of an arithmeticoperation (or bit shifted out from a shift operation) is placed in a special carrybit which can be used as a carryin for multiple ...
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