BILL GATES has heralded the arrival of the world’s “second digital decade”, predicting that within a few years technology will be in every room in the home, from screens to wall projections and even built into desks or tables.

The audience of a gadget show in the US burst into laughter when they watched Microsoft chairman Bill Gates take a starring role in his self-deprecating farewell video.

For more than a decade, US-based Microsoft chairman Bill Gates and others in the worldwide tech industry have touted a vision of a connected lifestyle, in which digital content can move across devices throughout the home and be taken on the go.