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  2. MIL-STD-1168 - Wikipedia

    en.wikipedia.org/wiki/MIL-STD-1168

    The Lot number is in the format of: LLH/NNL/NNNH/NNNLL/L. In this example, "L" stands for Letter, "N" stands for Number, and "H" stands for Hyphen. The slashes are to break the Lot Number code into identifiable sections. The first section (LLH or LLL) is the three-symbol Manufacturer’s Identification Symbol, which is two or three letters long ...

  3. Lot number - Wikipedia

    en.wikipedia.org/wiki/Lot_number

    Lot number stamped on a British QF 3-pounder artillery shell. A lot number is an identification number assigned to a particular quantity or lot of material from a single manufacturer. Lot numbers can typically be found on the outside of packaging. For cars, a lot number is combined with a serial number to form the Vehicle Identification Number. [1]

  4. Numeric precision in Microsoft Excel - Wikipedia

    en.wikipedia.org/wiki/Numeric_precision_in...

    Excel maintains 15 figures in its numbers, but they are not always accurate; mathematically, the bottom line should be the same as the top line, in 'fp-math' the step '1 + 1/9000' leads to a rounding up as the first bit of the 14 bit tail '10111000110010' of the mantissa falling off the table when adding 1 is a '1', this up-rounding is not undone when subtracting the 1 again, since there is no ...

  5. Data Matrix - Wikipedia

    en.wikipedia.org/wiki/Data_Matrix

    A Data Matrix on a Mini PCI card, encoding the serial number 15C06E115AZC72983004. The most popular application for Data Matrix is marking small items, due to the code's ability to encode fifty characters in a symbol that is readable at 2 or 3 mm 2 (0.003 or 0.005 sq in) and the fact that the code can be read with only a 20% contrast ratio. [1]

  6. Arithmetic coding - Wikipedia

    en.wikipedia.org/wiki/Arithmetic_coding

    Now we can choose any number from the interval [L, U) to represent the message; one convenient choice is the value with the longest possible trail of zeroes, 25100, since it allows us to achieve compression by representing the result as 251×10 2. The zeroes can also be truncated, giving 251, if the length of the message is stored separately.

  7. Universal Product Code - Wikipedia

    en.wikipedia.org/wiki/Universal_Product_Code

    A UPC barcode. The Universal Product Code (UPC or UPC code) is a barcode symbology that is used worldwide for tracking trade items in stores.. The chosen symbology has bars (or spaces) of exactly 1, 2, 3, or 4 units wide each; each decimal digit to be encoded consists of two bars and two spaces chosen to have a total width of 7 units, in both an "even" and an "odd" parity form, which enables ...

  8. Luhn algorithm - Wikipedia

    en.wikipedia.org/wiki/Luhn_algorithm

    If doubling a digit results in a value > 9, subtract 9 from it (or sum its digits). Sum all the resulting digits (including the ones that were not doubled). The check digit is calculated by ( 10 − ( s mod 1 0 ) ) mod 1 0 {\displaystyle (10-(s{\bmod {1}}0)){\bmod {1}}0} , where s is the sum from step 3.

  9. Price look-up code - Wikipedia

    en.wikipedia.org/wiki/Price_look-up_code

    PLU stickers with the number 4130 identifying them as Large Cripps Pink apples PLU code 4033 are for regular small lemon sold in the U.S.. Price look-up codes, commonly called PLU codes, PLU numbers, PLUs, produce codes, or produce labels, are a system of numbers that uniquely identify bulk produce sold in grocery stores and supermarkets.