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A Factory Interior, watercolor, pen and gray ink, graphite, and white goache on wove paper by unknown artist, c. 1871-91; in the Yale Center for British Art. Industrial Revolution England
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Leonardo da Vinci (1452-1519), Italian Renaissance painter from Florence. Engraving by Cosomo Colombini (d. 1812) after a Leonardo self portrait. Ca. 1500.
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An ancient egyptian hieroglyphic painted carving showing the falcon headed god Horus seated on a throne and holding a golden fly whisk. Before him are the Pharoah Seti and the goddess Isis. Interior wall of the temple to Osiris at Abydos, Egypt.
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Title: Senate Square, St. Petersburg, December 14, 1825: repression of the troop mutiny - watercolor by Carl Ivanovitch Kollman, 1825 depicts Decembrist uprising clashing with cavalry, with spectators watching. (new style December 26, 1825) Europe. Saint
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barcode scanner

technology
Also known as: bar code scanner

Learn about this topic in these articles:

laser applications

  • laser components: cutaway view
    In laser: Laser scanners

    …detect light reflected from striped bar codes on packages, decode the symbol, and relay the information to a computer so that it can add the price to the bill.

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usage in retailing

  • bar code (Universal Product Code)
    In barcode

    The numbers represented by a barcode are also printed out at its base.

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  • laptop computer
    In computer science: Social and professional issues

    …most checkout counters include a bar-code scanner, which reads into the computer the Universal Product Code (UPC) printed on each package. Cash register receipts then include brief descriptions of the items purchased (by fetching them from the computer database), and the purchase information is also relayed back to the computer…

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