Sigma 6
Sigma 6 may refer to: * '' G.I. Joe: Sigma 6'', a line of military-themed action figures and toys * SDS Sigma 6, one of the SDS Sigma series of computers made by Scientific Data Systems * Pink Floyd, a British rock group originally called Sigma 6 See also * Six Sigma, a set of techniques and tools for process improvement * 68–95–99.7 rule In statistics, the 68–95–99.7 rule, also known as the empirical rule, is a shorthand used to remember the percentage of values that lie within an interval estimate in a normal distribution: 68%, 95%, and 99.7% of the values lie within one, ...

SDS Sigma Series
The SDS Sigma series is a series of third generation computers that were introduced by Scientific Data Systems of the United States in 1966. The first machines in the series are the 16-bit Sigma 2 and the 32-bit Sigma 7; the Sigma 7 was the first 32-bit computer released by SDS. At the time the only competition for the Sigma 7 was the IBM 360. Memory size increments for all SDS/XDS/Xerox computers are stated in kWords, not kBytes. For example, the Sigma 5 base memory is 16K 32-Bit words (64K Bytes). Maximum memory is limited by the length of the instruction address field of 17 bits, or 128K Words (512K Bytes). Although this is a trivial amount of memory in today's technology, Sigma systems performed their tasks exceptionally well, and few were deployed with, or needed, the maximum 128K Word memory size. The Xerox 500 series computers, introduced starting in 1973, are compatible upgrades to the Sigma systems using newer technology. In 1975 Xerox sold its computer business to ...
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Sigma 6
Sigma 6 may refer to: * '' G.I. Joe: Sigma 6'', a line of military-themed action figures and toys * SDS Sigma 6, one of the SDS Sigma series of computers made by Scientific Data Systems * Pink Floyd, a British rock group originally called Sigma 6 See also * Six Sigma, a set of techniques and tools for process improvement * 68–95–99.7 rule In statistics, the 68–95–99.7 rule, also known as the empirical rule, is a shorthand used to remember the percentage of values that lie within an interval estimate in a normal distribution: 68%, 95%, and 99.7% of the values lie within one, ...

Pink Floyd
Pink Floyd are an English rock band formed in London in 1965. Gaining an early following as one of the first British psychedelic music, psychedelic groups, they were distinguished by their extended compositions, sonic experimentation, philosophical lyrics and elaborate Pink Floyd live performances, live shows. They became a leading band of the progressive rock genre, cited by some as the greatest progressive rock band of all time. Pink Floyd were founded in 1965 by Syd Barrett (guitar, lead vocals), Nick Mason (drums), Roger Waters (bass guitar, vocals), and Richard Wright (musician), Richard Wright (keyboards, vocals). Under Barrett's leadership, they released two charting singles and the successful debut album ''The Piper at the Gates of Dawn'' (1967). Guitarist and vocalist David Gilmour joined in December 1967; Barrett left in April 1968 due to deteriorating mental health. Waters became the primary lyricist and thematic leader, devising the concept album, concepts behind ...
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