IBM System 360 195 computer, manufactured by IBM, United States

The IBM 360/195 computer was introduced in 1971, and was part of a family of mainframe computers manufactured by IBM known as the System/360. System/360 computers ranged in size and performance, but nearly all used the same instruction set, meaning that users could upgrade to suit their needs without having to rewrite software. An IBM 360/195 at the University of California, Santa Barbara was one of the first computers to be connected to the ARPANET, the first computer network which used packet switching to share information between disparate computers. It was also the model of computer used at University College London to connect the UK to the fledgling ARPANET in 1973.