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Topic: Check digit

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	Check Digits
		Check digits in bar codes are used to check for an error in scanning.
		Check digits help prevent this from happening by using a pre-defined mathematical formula to calculate a "check-digit" for the data represented by the barcode.
		Digit positions are numbered from right to left in this algorithm so that the check digit position counts as position 1 and the number system character counts as position 12.
	www.autoid.org /Primer/check.htm (607 words)

	Check digit calculator - Patent 4419572
		In accordance with one embodiment of the invention, the desired check digit original numerals are indicated in response to the determination of a code number and weights and the desired check digit is readily obtained from the sum of the check digit original numerals.
		Generally, a check digit is a number calculated from the numerical value of each code number, and it is affixed to the least significant digit of the code number for the purpose of automatically detecting a coding error.
		For example, the sum of the check digit original numerals for the code number 467,843 is 28, and the remainder obtained by dividing the number by 10 is 8 which is equal to the result obtained by the ordinary calculating method.
	www.freepatentsonline.com /4419572.html (6921 words)

	The Check Digit
		The third digit of the d666 is useful, not only as a number for the rules, but also to give the GM some help in adding depth to otherwise bland situations and bringing the game to life for the players.
		Frequently, the check digit indicates something specific defined by the rules, like the amount of damage done by a weapon or the severity of a certain power.
		Or if someone is trying to jump from one rooftop to another, a 1 on the check digit might indicate that the jumper barely made it and is holding on by the tips of his fingers.
	www.sjgames.com /in-nomine/draft/check.html (241 words)

	Check Digit Algorithm - OpenMRS
		Check digits help to reduce the likelihood of errors by introducing a final digit that is calculated from the prior digits.
		All resulting digits are summed and the check digit is the amount necessary to take this sum up to a number divisible by ten.
		For a sum of '14', the check digit is '6' since '20' is the next number divisible by ten.
	www.openmrs.org /wiki/Check_Digit_Algorithm (1185 words)

	MOD 11 Check Digit
		A check digit is a number that is used to validate a series of numbers whose accuracy you want to insure.
		Frequently the last digit of a number string such as identification number is a check digit.
		This won't work, so if the check digit is 10, then X is frequently used as the check digit and if the check digit is 11 then 0 is used as the check digit.
	www.pgrocer.net /Cis51/mod11.html (399 words)

	Check Digit Algorithm - OpenMRS
		Check digits help to reduce the likelihood of errors by introducing a final digit that is calculated from the prior digits.
		All resulting digits are summed and the check digit is the amount necessary to take this sum up to a number divisible by ten.
		For a sum of '14', the check digit is '6' since '20' is the next number divisible by ten.
	openmrs.org /wiki/Check_Digit_Algorithm (1067 words)

	Eclectica
		This is done by calculating a single-digit value based on the account number, and then appending that digit to the base number to arrive at a final account number.
		When this account number is entered, the check digit value is stripped off and recalculated.
		if the remainder is one, the check digit is ambiguous, and the base number should not be used as an account number.
	www.eclectica.ca /howto/modulus-11-self-check.php (536 words)

	ISBN - Code
		The last digit is a check digit which is calculated from the previous nine digits.
		In this case, the middle digit of the answer is the last digit of the sum, and the first digit of the answer is 1 more than a (this is just the "carry" of addition).
		The check digit is y - (x + z) mod 11, that is, subtract the sum of the first and last digit from the middle digit, and then use clock arithmetic mod 11 to write the answer as a number between 0 and 10.
	www-math.cudenver.edu /~wcherowi/jcorner/isbn.html (1878 words)

	SR Computer Check Code Formula (Site not responding. Last check: )
		Add the first digit, plus twice the second, plus the third, plus twice the fourth (if doubling exceeds a single digit result, then add the two digits in the result).
		check digit is for the number being inputted and comparing it with the
		The check numbers on SouRy diesels were not used in correspondence, on the offficial rosters, or by dispatchers in issuing train orders.
	www.sourwy.railfan.net /sr1.html (485 words)

	Check digit calculation, Modulus 11, National Serials Data Program (Library of Congress)
		The purpose of a check digit is to guard against errors caused by the incorrect transcription of an ISSN.
		The modulus 11 basis using the weighting factors 8 to 2 for calculating the check digit is one of the most efficient systems for detecting transcription errors.
		It should be noted that the check digit is an essential and inseparable part of the ISSN.
	www.loc.gov /issn/check.html (232 words)

	Check Digit Numbering
		A check digit is derived mathematically from the data content of a character field, usually a numeric field.
		The check digit is appended to the data, and the entire message is printed as one numeric field.
		Since the check digit number is generated by a complex algorithm, which each serial number must go through before the check digit is determined, only digital imaging systems can be employed to calculate the weighted check digit.
	www.pointil.com /resources/mod.htm (686 words)

	Identification Numbers and Check Digits (Mod 7)
		The check digit is assigned so that the entire ten digit number is divisible by nine.
		The check digit should be the number which would give you a multiple of ten.
		A tenth check digit (seen only in the bar code) is then assigned so that the total sum is divisible by ten.
	jwilson.coe.uga.edu /EMT668/EMT668.Folders.F97/Waggener/Units/IDNumbers/checkdigits.htm (1100 words)

	Anatomy of Credit Card Numbers
		If the MII digit is 9, then the next three digits of the issuer identifier are the 3-digit country codes defined in ISO 3166, and the remaining final two digits of the issuer identifier can be defined by the national standards body of the specified country in whatever way it wishes.
		By changing the check digit from 0 to 3, we arrive at the number 4408 0412 3456 7893, which does pass the Luhn check, since the sum of the digits in the bottom row would be 70, which is divisible by 10.
		By changing the check digit from 2 to 3, we arrive at the number 4417 1234 5678 9113, which does pass the Luhn check, since the sum of the digits in the bottom row would be 70, which is divisible by 10.
	www.merriampark.com /anatomycc.htm (1161 words)

	Chapter 9: Identification Numbers
		Check to see if the remainder in step 2 is the 11th digit.
		To check this add up the first 9 digits and divide by 9 and see if it is the check digit.
		You want to find the number (this is the check digit) to add to 38 so that it is divisible by 9 (no remainder).
	www.math.okstate.edu /~millerd/Identification.htm (1052 words)

	Airlines Reporting Corporation - TM & LD Entries Without Check Digit (Site not responding. Last check: )
		If the carrier code or check digit is entered the transaction will be handled per current process.
		If the check digit is entered the transaction will be handled per current process.
		Check digit calculations for all document types are unchanged.
	www.arccorp.com /iarcheck.htm (322 words)

	SNX.com: What is a Check Digit?
		A check digit is used to check that the data is read correctly.
		The computer checks that the numbers were read correctly by comparing the check digit it calculates against the check digit it read.
		Reading a check digit of 392 and calculating a check digit of 392 from the other numbers it read, the bar code reader now is doubly certain that the numbers were correctly decoded.
	www.snx.com /faq/index.php?mode=viewFAQ&id=24 (248 words)

	Camarosource.ca VIN Decoder for ALL years. 1967 - 2002
		The check digit is a single digit in the 9th place of the 17th character VIN which began starting 1981.
		The check digit number was used to determine and verify that the accuracy of the VIN.
		The check digit appears on any transfer documents containing the VIN which is prepared by the manufacturer and given to the first owner for purposed other than resale.
	www.camarosource.ca /decoders/vin_decoder/templates/check_digit.htm (333 words)

	CHECK DIGIT
		Check digit verification is a special check on a numeric or alphanumeric field in which the last (rightmost) character is a check digit.
		In general, a check digit is arrived at by performing calculations on a number and then using the result of these calculations as the final digit or "check digit" in that number.
		The specified calculations (modulus 10 or 11) are performed on the 5-digit number, the result is added as a check digit to the number, and a 6-digit number is assigned as the new account number.
	docs.hp.com /en/32209-90024/ch04s13.html (367 words)

	Halfbakery: Phone Number Check Digit
		You can't have different check digits on the same number; the check digit is a function of the number.
		Therefore, if Jane gives me her "digits", being 123-4567, but i accidentally write down 123-4566, and when i get home to call her, i figure the check digit as 9, it still completes my call to phone number 123-4566.
		Check digits only work in bar codes if the bar code was printed correctly by the manufacturer of the product.
	www.halfbakery.com /idea/Phone_20Number_20Check_20Digit (816 words)

	IST 211 Check Digit Verification
		A check digit is a value associated with an identifier such as a bank account number.
		The purpose of the check digit is to help detect errors in data entry such as transposing two digits of the account number or entering the wrong digits.
		A check digit is usually computed using a special formula applied to each digit of the account number.
	grail.cba.csuohio.edu /~paul/211Ass4.htm (326 words)

	Check Digits
		We can eliminate (or easily detect) the problem of omitting or adding digits by restricting the input field to a given number of digits if we are dealing with numbers which are fixed in format, such as credit card numbers, Social Insurance Numbers, local phone numbers, and student ID numbers.
		The check digit is the rightmost digit in a 10-digit number.
		The digits in the even positions (numbering from the right) are multiplied by 2, then reduced to a single digit (if > 9) by "casting out nines" (subtracting 9, which is equivalent to adding the digits).
	www.augustana.ab.ca /~mohrj/algorithms/checkdigit.html (1267 words)

	Illuminations: Check That Digit
		Recall that there are a maximum of 10 digits with the 10th being reserved for the check digit.
		Begin by multiplying the first digit by 10, the second by 9, the third by 8, and continue in this fashion until the ninth digit is multiplied by 2.
		If the check digit were 1, the result would be congruent to 0 mod 10; but because the check digit is 2, the sum is not divisible by 10.
	illuminations.nctm.org /LessonDetail.aspx?id=L693 (2215 words)

	Verifying the check digit in PNRs using SAS
		The first 6 digits represent date of birth (YYMMDD), the ninth digit represents gender (even for females and odd for males), and the tenth digit is a check digit which can be constructed from the preceding nine digits.
		First multiply each of the first nine digits in the PNR by the digits 2,1,2,1,2,1,2,1,2 and calculate the cumulative sum of each of these 9 calculations.
		The check digit is the number we would have to add to the product sum in order to obtain a multiple of 10.
	www.pauldickman.com /teaching/sas/pnr_check.php (329 words)

	How To Generate A Check Digit
		Please make sure the field that you are using to generate the check digit has valid information in it.
		To generate a check digit add to the number field you are using.
		To generate a Check Digit without a space add to the number field you are using.
	www.collect.org /cv11/Help/howtogenerateacheckdigit.html (964 words)

	ISBN Check Digit
		The third block of digits represents is the number assigned to the book by the publishing company.
		The weighted values are 1 for the first digit from the left, 2 for the second digit, three for third digit, etc.
		NOTE: the applets for verifying check digits on this website are for demonstration purposes only and have not been rigorously tested.
	research.cs.queensu.ca /home/bradbury/checkdigit/isbncheck.htm (344 words)

	Check Digit
		A check digit is the result of a mathematical calculation performed on the preceding digits in the number.
		If you would like to calculate check digits for a number of consecutive EAN-13 numbers, then you should use box G to indicate the range of numbers.
		If you would like to calculate check digits for a range of consecutive SSCC numbers, then you should indicate the end of the range by entering seven digits in box W.
	www.gs1nz.org /CheckDigit.aspx (531 words)

	UPC check digit calculation
		A UPC check digit calculator is needed to figure it out what it should be.
		The UPC check digit is calculated and appended to the end.
		To calculate what a UPC code's check digit should be, add up the odd digits, multiple the subtotal by three, add that to the sum of the even digits, and then figure out what single digit number raises it to the next multiple of ten.
	www.jetcityorange.com /barcodes/UPC-barcodes/UPC-check-digit.html (378 words)

	Check Digit
		To determine check digit (9th digit) of your car you need to take the VIN and assign any letters in the VIN with a set value (number) as follows:
		Then divide by 11 and the remainder is your check digit.
		Divide 269 by 11 which gives you 24, and a remainder of 5 which is the same as the 9th digit of the VIN.
	members.tripod.com /skydiving/check.html (199 words)

	Bar Code Check Digit Calculator & Printing Application with Visual Basic & FoxPro Source Code
		IDAutomation's Font Encoder and Check Digit Calculator with Visual Basic source code works with IDAutomation's barcode fonts to create a string that when combined with IDAutomation's barcode fonts will create a correct barcode.
		NOTE: The Font Encoder and Check Digit Calculator is not to be used with IDAutomation's Universal Barcode Fonts, use the encoder provided with that application.
		The compiled application is ready to install and is designed to calculate check characters for the barcode fonts available from IDAutomation.
	www.idautomation.com /fonts/tools/barcodeapp (757 words)

	CHECK DIGIT INFORMATION
		A check digit is the result a mathematical calculation that is applied to a series of numbers.
		The most common check digit routine used in remittance processing is the Modulo 10, or Mod 10.
		By using a check digit and a CDV routine we can be sure that all numbers in the scanline will be read correctly and that errors will not occur.
	www.remittanceprocessor.com /cdv.htm (325 words)

	FTP Consulting Services - Check Digit
		Number your existing OCR scan line, for all characters to be included in the check digit calculation, from left to right starting with number “one”.
		Move to the right on the row where you found your remainder until you are under the column of the check digit algorithm that you used.
		The character found at the intersection of the row and column is the check digit for the characters that you included in your check digit routine.
	www.ftpconsulting.com /checkdigit.htm (649 words)

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