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A UPC barcode. The Universal Product Code (UPC or UPC code) is a barcode symbology that is used worldwide for tracking trade items in stores.. The chosen symbology has bars (or spaces) of exactly 1, 2, 3, or 4 units wide each; each decimal digit to be encoded consists of two bars and two spaces chosen to have a total width of 7 units, in both an "even" and an "odd" parity form, which enables ...
Code Country 001–019: UPC-A compatible - United States: 020–029: UPC-A compatible - Used to issue restricted circulation numbers within a geographic region [1] 030–039: UPC-A compatible - United States drugs (see United States National Drug Code) 040–049: UPC-A compatible - Used to issue restricted circulation numbers within a company ...
A prefix with a first digit of "0" indicates a 12-digit UPC-A code follows. A prefix with first two digits of "45" or "49" indicates a Japanese Article Number (JAN) follows. The less commonly used 8-digit EAN-8 barcode was introduced for use on small packages, where EAN-13 would be too large. 2-digit EAN-2 and 5-digit EAN-5 are supplemental ...
The station's opening ceremony. The North South line (NSL), Singapore's first MRT line, opened in stages from 1987 to 1989 and ended at Marina Bay station. [5] In the 2008 Land Transport Master Plan, the Land Transport Authority (LTA) announced a 1-kilometre (0.62-mile) extension of the NSL from Marina Bay, one of several upcoming projects meant to expand Singapore's rail network. [6]
The simplest possible line code, unipolar, gives too many errors on such systems, because it has an unbounded DC component. Most line codes eliminate the DC component – such codes are called DC-balanced, zero-DC, or DC-free. There are three ways of eliminating the DC component: Use a constant-weight code.
Until 1985, subscribers' telephone numbers in Singapore were five and six digits. Five digits were introduced in 1960s, whereas 5-digit and 6-digit phone numbers were introduced in 1960s as fixed lines grew, but in that year, these changed to seven digits as the introduction of new towns arose (Tampines, Jurong East, Bukit Batok, Yishun and Hougang) and a large number of new numbers were required.
The North–South Line (NSL) is a high-capacity Mass Rapid Transit (MRT) line in Singapore, operated by SMRT Corporation. Coloured red on the Singapore rail map, the line is 45 kilometres (28 mi) long and serves 27 stations, [ 2 ] 11 of which, between the Braddell and Marina South Pier stations, are underground.
The current Sengkang LRT and Punggol LRTs on the Light Rail Transit as well as the Changi Airport Skytrain do not have a traditional track gauge or rails. Rather, they use rubber tires on the Crystal Mover guided by rails on the sides, essentially a sort of hybrid between a driverless traditional electric multiple unit and a trolleybus.