clipped from: news.bbc.co.uk   
The way people interact with computers is going to dramatically change in the next five years, Microsoft chief Bill Gates has told BBC News.
Microsoft surface computer
He predicted that the keyboard and mouse would gradually give way to more intuitive and natural technologies.
In particular, he said, touch, vision and speech interfaces would become increasingly important.
Mr Gates made his comments whilst answering questions from BBC News website readers.
"This whole idea of what I call natural user interface is really redefining the experience," he said.
"We're adding the ability to touch and directly manipulate, we're adding vision so the computer can see what you're doing, we're adding the pen, we're adding speech," he told BBC News.
"I'll be brave, in five years we'll have many tens of million of people sitting browsing their photos, browsing their music, organising their lives using this type of touch interface," he said.