# IBM System/3X

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**IBM System/3X** was a line of general business [midrange computers](/source/Midrange_computer) that were developed and marketed by [IBM](/source/IBM) beginning in 1975. The [IBM AS/400](/source/IBM_AS/400), a successor system that was introduced in 1988, was based on a combination of the System/36 and System/38 computers.[1] The [IBM i](/source/IBM_i) operating system running on top of [IBM Power Systems](/source/IBM_Power_Systems) maintains backwards compatibility with some of the System/3x series operating systems.

## Series

- [IBM System/32](/source/IBM_System/32), released 1975
- [IBM System/34](/source/IBM_System/34), released 1978
- [IBM System/36](/source/IBM_System/36), released 1983
- [IBM System/38](/source/IBM_System/38), released 1979

## See also

- [IBM midrange computer](/source/IBM_midrange_computer)
- [IBM System/3](/source/IBM_System/3)
- [IBM System (disambiguation)](/source/IBM_System_(disambiguation))

## References

1. Wright, Jason (February 26, 2006). ["The comeback kit"](https://web.archive.org/web/20070808043143/http://www.information-age.com/article/2006/march/the_comeback_kit). Information Age. Archived from [the original](http://www.information-age.com/article/2006/march/the_comeback_kit) on August 8, 2007. Retrieved 2008-01-23.

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Adapted from the Wikipedia article [IBM System/3X](https://en.wikipedia.org/wiki/IBM_System%2F3X) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/IBM_System%2F3X?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.