Bill Gates finalized his three-day college tour at the Howard University in Washington where he expressed his confidence in today’s generation.

“The next 10 years will change the world more than the last 30″ – that’s Gates belief and he expressed it in front more than 600 students and faculty, making also a reference to the 30th anniversary of his software giant, co-founded after dropping out of Harvard University.

He has also visited Columbia and Princeton, the Universities of Michigan and Wisconsin, and the University of Waterloo in Ontario, Canada. His “The Impact and Opportunity of Technology: Why Computer Science? Why now?” speech ended the three-day college tour at the Howard University.

His visit had a two side purpose. At Howard, which counts 73 students bearing scholarships from Gates’ foundation, was a recruitment effort and product pitch also.

“There’s nothing more fun than doing this,” he said of the software profession. “From Microsoft, we need to recruit the best and the brightest and get them involved with these projects.”

He remembered about the old-days when he was writing software to run on a computer with only four kilobytes of memory, and predicted the future of technology. “Very soon, having four gigabytes of memory will be quite common,” Gates said. “Improving something by a power of a million is quite dramatic…We simply don’t find that kind of improvement anywhere else in the world.”