Steve Jobs, a quiet, yet effective CEO, is known for completely changing the landscape of the computer industry. Through the now famous company Apple, this self-made billionaire revolutionized the way everyday people thought about computers, and how computers fit into one's daily lives. He built an empire based on the concept that everyone should own a computer, and that they should be easy to use. He was one of the first to believe in the "user-friendly" concept, and he actually executed his ideas. Thus, the computers that he built for the masses were smaller as compared to mainframe systems, considerably cheaper, accessible, and user-focused.