System/370

The mainframe product line introduced in 1970 by IBM (superseding System/360), which added virtual memory and other enhancements. Subsequent series include the 303x, 43xx, 308x, 309x and 9370, all 370-architecture machines. The 370 architecture was brought down to the PC level in 1983 with the PC XT/370, and then again in 1989 with the VM/SP Technical Workstation. See IBM mainframes.

System/370

As impressive as this Model 155 was, there is more computational power in almost any one of today's desktop computers. Nevertheless, machines of this type routinely processed millions of records for the world's largest companies. They were doing real "data processing," not graphics processing which swallows up most of a computer's machine cycles these days. (Image courtesy of International Business Machines Corporation. Unauthorized use not permitted.)

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(hardware, IBM)

System/370 - (S/370) An IBM mainframe computer introduced in 1970 as a successor to the IBM 360. Enhancements included the ability to support virtual memory and improved main storage. Two models were available initially: 165 and 155, with cycle times of 80 and 115 nanoseconds. Press Release.