Following is the IBM mainframe evolution starting with the System/360 introduced in 1964. The IBM mainframe is the longest running computer family in history. Although current IBM mainframes are ...

In order to migrate to IBM's first family of computers, emulators were built into the System/360 series. THIS DEFINITION IS FOR PERSONAL USE ONLY. All other reproduction requires permission.

Many of us used “big iron” back in the day. Computers like the IBM S/360 or 3090 are hard to find, transport, and operate, so you don’t see many retrocomputer enthusiasts with an S/370 in ...