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A numerical value calculated from a series of bits of digital data, often by summing their values, used to test whether the data has changed during storage or transmission.

check′sum′ v.


a digit representing the number of bits of information transmitted, attached to the end of a message in order to verify the integrity of data
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Noun1.checksum - a digit representing the sum of the digits in an instance of digital data; used to check whether errors have occurred in transmission or storage
confirmation, substantiation, verification, check - additional proof that something that was believed (some fact or hypothesis or theory) is correct; "fossils provided further confirmation of the evolutionary theory"
References in periodicals archive ?
Table I: BCH and RS Parameters PARAMETERS BOSE-CHAUDHRI-HOCQUENGHEM REED SOLOMON BLOCK LENGTHS n = 2 [conjunction] v-1 N=2 [conjunction] v-1 NO OF CHECK BITS N -k<= vt n-k= v(2t) MINDISTANCE Dmin>=2t+1 Dmin=2t+1 Table 2: Comparison of coding WITHOUT ENCODING 1 BCH CODING Eb/N0 BER 6 0.
B and C then announce the result of the XOR of their check bits to A.
Their study revealed that a successful design should employ the most effective extra check bits to make full use of information in relayed bits to help decode the message from two users.