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Line 1: {{Refimprove\|date=May 2010}} {{Other uses\|IBM SMS}} [[File:SMScard.jpg\|thumb\|A single width SMS card.]] The '''Standard Modular System (SMS)''' was a system of standard [[transistor]]ized circuit boards and mounting racks developed by [[IBM]] in the late 1950s, originally for the [[IBM 7030 Stretch]].{{Citation needed\|date=May 2010}} They were used throughout IBM's second generation computers and peripherals, including its first transistorized calculator, the [[IBM 608]],<ref>http://www.columbia.edu/acis/history/608.html</ref> and the [[IBM 700/7000 series\|7000]] and [[IBM 1400 series\|1400]] lines and the [[IBM 1620\|1620]]. SMS was superseded by [[Solid Logic Technology]] (SLT) introduced with [[System/360]] in 1964, however they remained in use with legacy systems through the 1970s.

Standard Modular System: Difference between revisions