IBM has made several models of minicomputers over the years: the System 34, System 36, System 38[?], and finally AS/400 (recently rechristened the iSeries[?]). They have also made some more minor models (details?). (Mention the failed project before release of AS/400?).
... system. A wide variety of DRM systems have also been employed to restrict access to eBooks[?]. See the TCPA / Pallidium FAQ maintained by Professor Ross J Anderson on his ...