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.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
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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.
Analysis of fast radix-10 digit recurrence algorithms for fixed-point and floating-point dividers on FPGAs

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