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checksum
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checksum

In computing, a control total of specific items of data. A checksum is used as a check that data have been input or transmitted correctly. It is used in communications and in, for example, accounts programs. See also validation.



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Interestingly, I had to generate a fictitious Visa card number with a correct check sum to get it replaced," he said.
United Kingdom: Online payment standards fall on deaf websites by TendersInfo
There is also a system to compare the check sums of loaded sections of FORTRAN programs to debug compilation problems on specific IBM computers.
File Comparison Software by Sam Miller / Computers and Internet community
The first is calculating a check sum during the backup process, then reading the tape, recalculating the check sum and doing a comparison--they should be equal.
Plan for the worst, hope for the best: backup & disaster recovery, ... by Edwards, Morgan / Computer Technology Review
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