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( Uniform Product Code ). The north American Standard or system for applying unique article numbers and bar codes to
products. The UPC bar code is a numeric only code, generally encoding 12 digits ( UPC-A ), though in specific circumstances
shorter symbols ( UPC-E ), supplementary codes, and longer symbol architecture ( UPC-D ) are used: The international
equivalent ( of which UPC is technically a subset ) is the European Artcle Number ( EAN ) system.
( Uniform Symbology Specification ). Any of the specifications published by AIM for encoding, printing and verifying bar code symbologies, in order to provide common standards for users in different applications. They replace the Uniform Symbol Descriptions ( USDs ).
( Unit Under Test ). Usually used to refer to a board under test, while DUT ( Device Under Test ) refers to an individual device being tested.