April 7, 1964 – IBM Announces System/360 Computer Family The launch of IBM’s System/360 set the company on a path to dominate the computer industry and began an era of computer compatibility that allowed machines across a product line to work with each other for the first time. It changed the IT industry forever, and the software written for it in 1965 is still running on some mainframes today. sourcegraph.com The S/360 replaced all five of IBM’s computer product lines with