Bill Gates, who built his fortune equipping the personal computer, predicts that the keyboard and mouse will soon become relics.

The founder of Microsoft Corp used his swansong to the technology industry on Sunday to spell out a vision of a “digital decade” of telephones, televisions and cars that respond to voice and touch.

“This is the area that people underestimate the most,” he said. Mr Gates, who plans to retire from day-to-day operations at Microsoft in July to oversee his $37 billion (£18 billion) charitable foundation, gave a keynote address to a packed 3,500-seat Las Vegas ballroom at the world’s largest consumer electronics show.

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