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  2. 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 ...

  3. Postal codes in Vietnam - Wikipedia

    en.wikipedia.org/wiki/Postal_codes_in_Vietnam

    The postal code system of Vietnam has officially been changed from 6 digits to 5 digits. Each country has its own separate postal code or zip code system. The postal code of Vietnam is composed of 5 digits, with the following meanings: [2] [3] The first digit determines the area code.

  4. North American Industry Classification System - Wikipedia

    en.wikipedia.org/wiki/North_American_Industry...

    The North American Industry Classification System or NAICS (/ n eɪ k s /) [1] is a classification of business establishments by type of economic activity (the process of production).

  5. Card security code - Wikipedia

    en.wikipedia.org/wiki/Card_security_code

    There are several types of security codes and PVV (all generated from DES key in the bank in HSM modules using PAN, expiration date and service code): . The first code, 3 numbers, called CVC1 or CVV1, is encoded on track one and two of the magnetic stripe of the card and used for card present transactions, with signature (second track also contains pin verification value, PVV, but now it is ...

  6. Postal Index Number - Wikipedia

    en.wikipedia.org/wiki/Postal_Index_Number

    An example of a Postal Index Number from Ujjain in Madhya Pradesh. 4 indicates the West postal zone, 5 indicates a postal sub-zone in Madhya Pradesh, 6 indicates the Ujjain sorting district, 0 indicates the Ujjain core area service route, 01 indicates the Ujjain Head Office as the delivery office.

  7. List of country calling codes - Wikipedia

    en.wikipedia.org/wiki/List_of_country_calling_codes

    Zone 5 uses eight 2-digit codes (51–58) and two sets of 3-digit codes (50x, 59x) to serve South and Central America. Zone 6 uses seven 2-digit codes (60–66) and three sets of 3-digit codes (67x–69x) to serve Southeast Asia and Oceania. Zone 7 uses an integrated numbering plan; two digits (7x) determine the area served: Russia or Kazakhstan.

  8. Postal codes in Singapore - Wikipedia

    en.wikipedia.org/wiki/Postal_codes_in_Singapore

    The 6-digit postal code is made up of the sector code and the delivery point. The sector is represented by the first two numbers of the postal code. The remaining four numbers define the delivery point within the sector. e.g.

  9. Chinese telegraph code - Wikipedia

    en.wikipedia.org/wiki/Chinese_telegraph_code

    The Chinese telegraph code, Chinese telegraphic code, or Chinese commercial code (simplified Chinese: 中文电码; traditional Chinese: 中文電碼; pinyin: Zhōngwén diànmǎ or simplified Chinese: 中文电报码; traditional Chinese: 中文電報碼; pinyin: Zhōngwén diànbàomǎ) [1] is a four-digit decimal code (character encoding) for electrically telegraphing messages written with ...