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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. 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 ...

  3. List of Facebook features - Wikipedia

    en.wikipedia.org/wiki/List_of_Facebook_features

    Facebook launched it as a tab on the Facebook app and a standalone app. It also has an In-stream Rewards feature where viewers are gifted in-game rewards while watching streams with Mobile Legends: Bang Bang being a part of pioneering the feature as mentioned by Jack Li, a Facebook Gaming representative, on Moonton Epicon held last July 18, 2019.

  4. Barcode - Wikipedia

    en.wikipedia.org/wiki/Barcode

    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 ...

  5. List of data references for chemical elements - Wikipedia

    en.wikipedia.org/wiki/List_of_data_references...

    List of chemical elements — with basic properties like standard atomic weight, m.p., b.p., abundance. Abundance of the chemical elements. Abundances of the elements (data page) — Earth's crust, sea water, Sun and Solar System. Abundance of elements in Earth's crust. Atomic radii of the elements (data page) — atomic radius (empirical ...

  6. Phishing - Wikipedia

    en.wikipedia.org/wiki/Phishing

    The term "quishing" involves deceiving individuals into thinking a QR code is harmless while the true intent is malicious, aiming to access sensitive information. Cybercriminals exploit the trust placed in QR codes, particularly on mobile phones, which are more vulnerable to attacks compared to desktop operating systems.

  7. Context menu - Wikipedia

    en.wikipedia.org/wiki/Context_menu

    A context menu (also called contextual, shortcut, and pop up or pop-up menu) is a menu in a graphical user interface (GUI) that appears upon user interaction, such as a right-click mouse operation. A context menu offers a limited set of choices that are available in the current state, or context, of the operating system or application to which ...

  8. QR decomposition - Wikipedia

    en.wikipedia.org/wiki/QR_decomposition

    QR decomposition. In linear algebra, a QR decomposition, also known as a QR factorization or QU factorization, is a decomposition of a matrix A into a product A = QR of an orthonormal matrix Q and an upper triangular matrix R. QR decomposition is often used to solve the linear least squares (LLS) problem and is the basis for a particular ...

  9. Linked data structure - Wikipedia

    en.wikipedia.org/wiki/Linked_data_structure

    Linked lists. A linked list is a collection of structures ordered not by their physical placement in memory but by logical links that are stored as part of the data in the structure itself. It is not necessary that it should be stored in the adjacent memory locations. Every structure has a data field and an address field.

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