A condensed history of IBM mainframes and their operating systems from System/360 through System/39...
IBM's own history site, with pages on many of their significant systems (see especially the "Exhibi...
A description of the first superscalar computer system - the IBM ACS project in the 1960s.
A brief description of the hardware parallelism of the IBM Stretch computer (also known as the IBM ...
Summary of Columbia University's dense, more than 50-year-long history of academic use of IBM syste...