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  2. Barcode - Wikipedia

    en.wikipedia.org/wiki/Barcode

    Williams also developed Code 128, and the structure of 16K is based on Code 128. Not coincidentally, 128 squared happened to equal 16,384 or 16K for short. Code 16K resolved an inherent problem with Code 49. Code 49's structure requires a large amount of memory for encoding and decoding tables and algorithms. 16K is a stacked symbology. [41] [42]

  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. Laundry symbol - Wikipedia

    en.wikipedia.org/wiki/Laundry_symbol

    By the early 1970s, GINETEX was working with ISO to develop international standards for textile labelling, eventually leading to the ISO 3758 standard, Textiles – Care labelling code using symbols. [ 2 ] [ 3 ] ISO 3758 was supplemented in 1993, revised in 2005 and again in 2012 and 2023 with reviews of the standard held on a five-year cycle.

  5. Read–eval–print loop - Wikipedia

    en.wikipedia.org/wiki/Read–eval–print_loop

    In 1964, the expression READ-EVAL-PRINT cycle is used by L. Peter Deutsch and Edmund Berkeley for an implementation of Lisp on the PDP-1. [3] Just one month later, Project Mac published a report by Joseph Weizenbaum (the creator of ELIZA, the world's first chatbot) describing a REPL-based language, called OPL-1, implemented in his Fortran-SLIP language on the Compatible Time Sharing System (CTSS).

  6. Battery nomenclature - Wikipedia

    en.wikipedia.org/wiki/Battery_nomenclature

    Standardized code or diameter code Diameter modifier Height code Height adjustment modifier Modifier(s) Parallel strings Remarks R20: R: 20: A single zinc-carbon cell, "size 20" which is equivalent to D, or ANSI "13" size 4R25X: 4: R: 25: X: A zinc-carbon lantern battery, consisting of 4 round "size 25" cells in series. Terminated with spring ...

  7. GHS hazard pictograms - Wikipedia

    en.wikipedia.org/wiki/GHS_hazard_pictograms

    Note: The asterisks are replaced by the class number and compatibility code Divisions 1.1–1.3 Explosives – Substances and articles which are classified as explosives but which present no significant hazard Note: The asterisk is replaced by the compatibility code Division 1.4

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