A **check digit** is a form of redundancy check used for error detection, the decimal equivalent of a binary checksum. It consists of a single digit computed from the other digits in the message.

With a check digit, one can detect simple errors in the input of a series of digits, such as a single mistyped digit or some permutations of two successive digits.

### Other articles related to "check digit, digit, check, digits":

**Check Digit**

... Because Codabar is self-checking, most standards do not define a

**check digit**... standards that use Codabar will define a

**check digit**, but the algorithm is not universal ...

... the number sequence 1234567 using the most common Mod 10

**check digit**methodology ... The

**check digit**(as calcuated above) for this sequence is 4 ... Once you have calculated your

**check digit**, simply map each character in the string to be encoded using the table above as a reference to get the binary map of the bar code remember to precede the code with "star ...

... The DX class received four-

**digit**numbers starting with 5, in which the fourth number is a

**check digit**for the number ... were numbered in order, with DX 2600 renumbered DX 5016 (6 being the

**check digit**) and DX 2648 renumbered DX 5517 ... as these as these numbers do not generate a valid

**check digit**, and DX 2639 never received a TMS number as it had been withdrawn by then ...

... The ABA transit number appears in two forms on a standard

**check**– the fraction form and the MICR (magnetic ink character recognition) form ... it appears at the bottom left of a

**check**, and consists of nine

**digits**... line, and still serves as a backup in

**check**processing should the MICR line become illegible or torn it generally appears in the upper right part of a

**check**near the ...

**Check Digit**Calculation - Mod 10

**Check Digit**

... When using the Mod 10

**check digit**algorithm, a string to be encoded 1234567 will be printed with a

**check digit**of 12345674 ... The Mod 10

**check digit**algorithm uses the Luhn algorithm ...

### Famous quotes containing the words digit and/or check:

“Bless my soul, Sir, will you Britons not credit that an American can be a gentleman, & have read the Waverly Novels, tho every *digit* may have been in the tar-bucket?”

—Herman Melville (1819–1891)

“This fellow is wise enough to play the fool,

And to do that well craves a kind of wit.

He must observe their mood on whom he jests,

The quality of persons, and the time,

Not, like the haggard, *check* at every feather

That comes before his eye. This is a practice

As full of labor as a wise man’s art.”

—William Shakespeare (1564–1616)