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  2. Google Meet - Wikipedia

    en.wikipedia.org/wiki/Google_Meet

    Google Meet is a video communication service developed by Google. [8] It is one of two apps that constitute the replacement for Google Hangouts , the other being Google Chat . [ 9 ] It replaced the consumer-facing Google Duo on November 1, 2022, with the Duo mobile app being renamed Meet and the original Meet app set to be phased out.

  3. 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 ...

  4. PDF417 - Wikipedia

    en.wikipedia.org/wiki/PDF417

    PDF417 is a stacked linear barcode format used in a variety of applications such as transport, identification cards, and inventory management. "PDF" stands for Portable Data File. The "417" signifies that each pattern in the code consists of 4 bars and spaces in a pattern that is 17 units (modules) long.

  5. Reed–Solomon error correction - Wikipedia

    en.wikipedia.org/wiki/Reed–Solomon_error...

    The Reed–Solomon code is actually a family of codes, where every code is characterised by three parameters: an alphabet size , a block length, and a message length, with <. The set of alphabet symbols is interpreted as the finite field F {\displaystyle F} of order q {\displaystyle q} , and thus, q {\displaystyle q} must be a prime power .

  6. Glossary of video game terms - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_video_game_terms

    Level 256 in Pac-Man is unbeatable due to a bug associated with an integer overflow in the game's code. A stage or level in a video game (often an arcade game) that stops the player's progress due to a software bug. [86] Not to be mistaken for a game over screen, kill screens can result in unpredictable gameplay and bizarre glitches. [87] kill ...

  7. Code 39 - Wikipedia

    en.wikipedia.org/wiki/Code_39

    The Code 39 specification defines 43 characters, consisting of uppercase letters (A through Z), numeric digits (0 through 9) and a number of special characters (-, ., $, /, +, %, and space ). An additional character (denoted '*') is used for both start and stop delimiters. Each character is composed of nine elements: five bars and four spaces.

  8. Ethernet frame - Wikipedia

    en.wikipedia.org/wiki/Ethernet_frame

    Payload is a variable-length field. Its minimum size is governed by a requirement for a minimum frame transmission of 64 octets (bytes). [e] With header and FCS taken into account, the minimum payload is 42 octets when an 802.1Q tag is present [f] and 46 octets when absent. When the actual payload is less than the minimum, padding octets are ...

  9. Google Duo - Wikipedia

    en.wikipedia.org/wiki/Google_Duo

    Type. Video chat mobile app. Website. duo .google .com. Google Duo was a proprietary voice over IP (VoIP) and videotelephony service released in 2016 by Google and merged into its Google Meet product in 2022. It was available for Android, IOS and web browsers.