 Developers of the TX-0 left to form the Digital Equipment Corporation in 1957.Transistorized from the beginning, early DEC products included the PDP-1, PDP-6, PDP-7 and early PDP-8s, the last starting the minicomputer revolution.Later models of the PDP-8 beginning with PDP-8I in 1968 used integrated circuits making them third generation computers

In 1964, IBM announced its System/360, a collection of computers covering a wide range of capabilities and prices with a unified architecture, to replace its earlier computers.