Lisa (1983) – Jobs’ visit to Xerox Corp’s research centre in Palo Alto inspired him to start work on the first commercial computer with a graphical user interface, with icons, windows and a cursor controlled by a mouse. It was the foundation for today’s computer interfaces, but the Lisa was too expensive to be a commercial success. Photo: Flickr/atmasphere

Lisa (1983) – Jobs’ visit to Xerox Corp’s research centre in Palo Alto inspired him to start work on the first commercial computer with a graphical user interface, with icons, windows and a cursor controlled by a mouse. It was the foundation for today’s computer interfaces, but the Lisa was too expensive to be a commercial success. Photo: Flickr/atmasphere