redundant digit

redundant digit

[ri′dən·dənt ′dij·it]
(computer science)
Digit that is not necessary for an actual computation but serves to reveal a malfunction in a digital computer.
References in periodicals archive ?
This performance gain is achieved by using a redundant digit set, -a [less than or equal to] [z.sub.j] [less than or equal to] a, which defines a redundancy factor
Then, the operands are recoded because the digit recurrence iteration uses a redundant digit representation with BCD-4221 carry-save adders.

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