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  2. Single-event upset - Wikipedia

    en.wikipedia.org/wiki/Single-event_upset

    In digital and analog circuits, a single event may cause one or more voltages pulses (i.e. glitches) to propagate through the circuit, in which case it is referred to as a single-event transient (SET). Since the propagating pulse is not technically a change of "state" as in a memory SEU, one should differentiate between SET and SEU.

  3. 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 ...

  4. Unstructured Supplementary Service Data - Wikipedia

    en.wikipedia.org/wiki/Unstructured_Supplementary...

    Unstructured Supplementary Service Data. Unstructured Supplementary Service Data ( USSD ), sometimes referred to as " quick codes " or " feature codes ", is a communications protocol used by GSM cellular telephones to communicate with the mobile network operator 's computers. USSD can be used for WAP browsing, prepaid callback service, mobile ...

  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. Event-driven architecture - Wikipedia

    en.wikipedia.org/wiki/Event-driven_architecture

    The event itself is a pointer to a method in another object. If the pointer is not empty, when an event occurs, the event handler is called. Events are commonly used in classes that support GUI. This is not the only area of application for events, however. The following code is an example of using events:

  7. Facebook - Wikipedia

    en.wikipedia.org/wiki/Facebook

    History Further information: History of Facebook 2003–2006: Thefacebook, Thiel investment, and name change Original layout and name of Thefacebook in 2004, showing Al Pacino's face superimposed with binary numbers as Facebook's original logo, designed by co-founder Andrew McCollum Zuckerberg built a website called "Facemash" in 2003 while attending Harvard University. The site was comparable ...

  8. Link state packet - Wikipedia

    en.wikipedia.org/wiki/Link_state_packet

    Link state packet. Link State Packet ( LSP) is a packet of information generated by a network router in a link state routing protocol that lists the router's neighbors. Link state packets can be further defined as special datagrams that determine the names of and the cost or distance to any neighboring routers and associated networks.

  9. Event (computing) - Wikipedia

    en.wikipedia.org/wiki/Event_(computing)

    The events generated using a touchscreen are commonly referred to as touch events or gestures. Device events. Device events include action by or to a device, such as a shake, tilt, rotation, or move. Delegate event model Delegate event model. clickme is the event source –a button in this example–, and it contains a list of listeners.