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  2. Electronic serial number - Wikipedia

    en.wikipedia.org/wiki/Electronic_serial_number

    ESNs are often represented as either 11-digit decimal numbers or 8-digit hexadecimal numbers. For the decimal format the first three digits are the decimal representation of the first eight bits (between 00 and 255 inclusive) and the next eight digits are derived from the remaining 24 bits and will be between 0000000 and 16777215 inclusive. The ...

  3. Mobile equipment identifier - Wikipedia

    en.wikipedia.org/wiki/Mobile_equipment_identifier

    The decimal form is specified to be 18 digits grouped in a 5–5–4–4 pattern and is calculated by converting the manufacturer code portion (32 bits) to decimal and padding on the left with '0' digits to 10 digits and separately converting the serial number portion to decimal and padding on the left to 8 digits.

  4. Serial decimal - Wikipedia

    en.wikipedia.org/wiki/Serial_decimal

    In computers, a serial decimal numeric representation is one in which ten bits are reserved for each digit, with a different bit turned on depending on which of the ten possible digits is intended. ENIAC and CALDIC used this representation.

  5. Vehicle identification number - Wikipedia

    en.wikipedia.org/wiki/Vehicle_identification_number

    VIN on a Chinese moped VIN on a 1996 Porsche 993 GT2 VIN visible in the windshield VIN recorded on a Chinese vehicle licence. A vehicle identification number (VIN; also called a chassis number or frame number) is a unique code, including a serial number, used by the automotive industry to identify individual motor vehicles, towed vehicles, motorcycles, scooters and mopeds, as defined by the ...

  6. International Mobile Equipment Identity - Wikipedia

    en.wikipedia.org/wiki/International_Mobile...

    The RBI numbers are allocated by the Global Decimal Administrator. IMEI numbers being decimal helps distinguish them from an MEID, which is hexadecimal and always has 0xA0 or larger as the first two hexadecimal digits. For example, the old style IMEI code 35-209900-176148-1 or IMEISV code 35-209900-176148-23 tells us the following:

  7. Bit numbering - Wikipedia

    en.wikipedia.org/wiki/Bit_numbering

    This table illustrates an example of an 8 bit signed decimal value using the two's complement method. The MSb most significant bit has a negative weight in signed integers, in this case -2 7 = -128. The other bits have positive weights. The lsb (least significant bit) has weight 1. The signed value is in this case -128+2 = -126.

  8. Porsche VIN specification - Wikipedia

    en.wikipedia.org/wiki/Porsche_VIN_specification

    Second character of model type (read positions 7,8 and 12 together). 9: For RoW = 0-9,X,Z (filler) Calculated checkdigit. 10: Year code. 11: Factory code. 12: Third character of model type (read positions 7,8 and 12 together). 13: Body configuration code or leading digit of serial number. 14: First digit of serial number. 15: Second digit of ...

  9. Check digit - Wikipedia

    en.wikipedia.org/wiki/Check_digit

    For instance, the UPC-A barcode for a box of tissues is "036000241457". The last digit is the check digit "7", and if the other numbers are correct then the check digit calculation must produce 7. Add the odd number digits: 0+6+0+2+1+5 = 14. Multiply the result by 3: 14 × 3 = 42. Add the even number digits: 3+0+0+4+4 = 11.