Unit prefix
A unit prefix is a specifier or mnemonic that is prepended to units of measurement to indicate multiples or fractions of the units. Units of various sizes are commonly formed by the use of such prefixes. The prefixes of the metric system, such as kilo and milli, represent multiplication by powers of ten. In information technology it is common to use binary prefixes, which are based on powers of two. Historically, many prefixes have been used or proposed by various sources, but only a narrow set has been recognised by standards organisations.
Metric prefixes
The prefixes of the metric system precede a basic unit of measure to indicate a decadic multiple and fraction of a unit. Each prefix has a unique symbol that is prepended to the unit symbol. Some of the prefixes date back to the introduction of the metric system in the 1790s, but new prefixes have been added, and some have been revised. The International Bureau of Weights and Measures has standardised twenty metric prefixes in resolutions dating from 1960 to 1991 for use with the International System of Units (SI).
Western Electric
Western Electric Company (WE, WECo) was an American electrical engineering and manufacturing company that served as the primary supplier to AT&T from 1881 to 1996. The company was responsible for many technological innovations and seminal developments in industrial management. It also served as the purchasing agent for the member companies of the Bell System.
History
In 1856, George Shawk purchased an electrical engineering business in Cleveland, Ohio. On December 31, 1869, he became partners with Enos M. Barton and, later the same year, sold his share to inventor Elisha Gray. In 1872 Barton and Gray moved the business to Clinton Street, Chicago, Illinois, and incorporated it as the Western Electric Manufacturing Company. They manufactured a variety of electrical products including typewriters, alarms, and lighting and had a close relationship with telegraph company Western Union, to whom they supplied relays and other equipment.
In 1875, Gray sold his interests to Western Union, including the caveat that he had filed against Alexander Graham Bell's patent application for the telephone. The ensuing legal battle between Western Union and the Bell Telephone Company over patent rights ended in 1879 with Western Union withdrawing from the telephone market and Bell acquiring Western Electric in 1881.
WECO
WECO may refer to:
