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  2. Secret Service code name - Wikipedia

    en.wikipedia.org/wiki/Secret_Service_code_name

    President John F. Kennedy, codename "Lancer" with First Lady Jacqueline Kennedy, codename "Lace". The United States Secret Service uses code names for U.S. presidents, first ladies, and other prominent persons and locations. [1] The use of such names was originally for security purposes and dates to a time when sensitive electronic ...

  3. Postal codes in Afghanistan - Wikipedia

    en.wikipedia.org/wiki/Postal_codes_in_Afghanistan

    They are managed by Afghan Post, the national public postal service under the direction of Afghan Ministry of Communications and Information Technology . Afghanistan postal codes are four digits (NNNN). The first two digits (ranging from 10–43) correspond to the province, while the last two digits correspond either to the city/delivery zone ...

  4. Postal codes in Austria - Wikipedia

    en.wikipedia.org/wiki/Postal_codes_in_Austria

    3xxx: Lower Austria (west of Vienna) 4xxx: Upper Austria. 5xxx: Salzburg and west Upper Austria. 6xxx: Tyrol and Vorarlberg (without East Tyrol) 7xxx: Burgenland. 8xxx: Styria. 9xxx: Carinthia and East Tyrol. 2-digit postcode areas Austria (defined through the first two postcode digits) The second number indicates the regional area in the state ...

  5. QR code - Wikipedia

    en.wikipedia.org/wiki/QR_code

    The QR code system was invented in 1994, at the Denso Wave automotive products company, in Japan. The initial alternating-square design presented by the team of researchers, headed by Masahiro Hara, was influenced by the black counters and the white counters played on a Go board; the pattern of position detection was found and determined by applying the least-used ratio (1:1:3:1:1) in black ...

  6. Electric generator - Wikipedia

    en.wikipedia.org/wiki/Electric_generator

    In electricity generation, a generator [1] is a device that converts motion-based power ( potential and kinetic energy) or fuel-based power ( chemical energy) into electric power for use in an external circuit. Sources of mechanical energy include steam turbines, gas turbines, water turbines, internal combustion engines, wind turbines and even ...

  7. Postal codes in France - Wikipedia

    en.wikipedia.org/wiki/Postal_codes_in_France

    Postal codes were introduced in France in 1964, when La Poste introduced automated sorting. They were updated to use the current 5 digit system in 1972. France uses five-digit numeric postal codes, the first two digits representing the département in which the city is located. The département numbers were assigned alphabetically between 1860 ...

  8. Postcodes in the United Kingdom - Wikipedia

    en.wikipedia.org/wiki/Postcodes_in_the_United...

    Listings and availability. There are approximately 1.7 million postcodes in the United Kingdom, the Channel Islands and the Isle of Man. [70] Each postcode is divided by a space into two parts. As mentioned above, the first part starts with the postcode area and ends with the postcode district.

  9. Postal codes in Tunisia - Wikipedia

    en.wikipedia.org/wiki/Postal_codes_in_Tunisia

    Postal codes in Tunisia are four digit numbers. The first two digits of the postal code denote the Governorates of Tunisia . Listed below are the first 2 digits of codes assigned to each governorate.