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  2. 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. [5] [6] [7] 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; [8] the pattern of position detection was found and determined by applying the least-used ratio (1:1:3 ...

  3. Facebook - Wikipedia

    en.wikipedia.org/wiki/Facebook

    It began as Facebook Chat in 2008, [294] was revamped in 2010 [295] and eventually became a standalone mobile app in August 2011, while remaining part of the user page on browsers. [296] Complementing regular conversations, Messenger lets users make one-to-one [297] and group [298] voice [299] and video calls. [300]

  4. Barcode - Wikipedia

    en.wikipedia.org/wiki/Barcode

    A UPC-A barcode. A barcode or bar code is a method of representing data in a visual, machine-readable form. Initially, barcodes represented data by varying the widths, spacings and sizes of parallel lines. These barcodes, now commonly referred to as linear or one-dimensional (1D), can be scanned by special optical scanners, called barcode ...

  5. Programming languages used in most popular websites

    en.wikipedia.org/wiki/Programming_languages_used...

    One thing the most visited websites have in common is that they are dynamic websites.Their development typically involves server-side coding, client-side coding and database technology.

  6. Code generation (compiler) - Wikipedia

    en.wikipedia.org/wiki/Code_generation_(compiler)

    In computing, code generation is part of the process chain of a compiler and converts intermediate representation of source code into a form (e.g., machine code) that can be readily executed by the target system. Sophisticated compilers typically perform multiple passes over various intermediate forms. This multi-stage process is used because ...

  7. Add or disable 2-step verification for extra security - AOL Help

    help.aol.com/articles/2-step-verification...

    1-800-358-4860. Get live expert help with your AOL needs—from email and passwords, technical questions, mobile email and more. Add or disable 2-step verification for extra security. Add an extra security step to sign into your account with 2-step verification. Find out how to turn on 2-step verification and receive a verification code, and ...

  8. Area codes 315 and 680 - Wikipedia

    en.wikipedia.org/wiki/Area_codes_315_and_680

    Area codes 315 and 680. Coordinates: 43°30′N 76°10′W. Area codes in New York state; area codes 315 and 680 highlighted in light blue. Area codes 315 and 680 are telephone area codes of the North American Numbering Plan (NANP) for the north- central area of the U.S. state of New York. Area code 315 was installed as one of the original ...

  9. Facebook Platform - Wikipedia

    en.wikipedia.org/wiki/Facebook_Platform

    The Facebook Platform is the set of services, tools, and products provided by the social networking service Facebook for third-party developers to create their own applications and services that access data in Facebook. [1] The current Facebook Platform was launched in 2010. [2] The platform offers a set of programming interfaces and tools ...