nearly all useful people are white males. Only they can do technology.
Considering the atrocious amount of racism you demonstrate I'm loathe to even respond. But it seems worth while to point out a few people with whom you're obviously not familiar.
Dr. Mark Dean
Dean is the first African-American to become an IBM Fellow which is the highest level of technical excellence at the company. In 1997, he was inducted into the National Inventors Hall of Fame. Currently, he is the John Fisher Distinguished Professor in the Department of Electrical Engineering and Computer Science at the University of Tennessee. He was previously CTO for IBM Middle East and Africa and was an IBM Vice President overseeing the company's Almaden Research Center in San Jose, California prior to that. Dean now holds more than 20 patents. Dean was part of the team that developed the interior architecture (ISA systems bus) that enables multiple devices, such as modems and printers, to be connected to personal computers. Dean also taught computer science at Harvard.
Mark Dean computer scientist - Wikipedia the free encyclopedia
Dr. James West
Along with Gerhard M. Sessler, he developed the foil electret microphone, an inexpensive, compact device that is now used in 90 percent of all contemporary microphones. A prolific writer as well, West has more than 250 patents and became a professor at Johns Hopkins University.
http://www.biography.com/people/james-west-538802#synopsis
Dr. Philip Emeagwali
The noted black inventor received acclaim based, at least in part, on his study of nature, specifically bees. Emeagwali saw an inherent efficiency in the way bees construct and work with honeycomb and determined computers that emulate this process could be the most efficient and powerful. In 1989, emulating the bees' honeycomb construction, Emeagwali used 65,000 processors to invent the world's fastest computer, which performs computations at 3.1 billion calculations per second.
Dr. Philip Emeagwali's resume is loaded with many other such feats, including ways of making oil fields more productive – which has resulted in the United States saving hundreds of millions of dollars each year.
Dr. Philip Emeagwali Inventor of the World s Fastest Computer