Steven Paul Jobs was an American business magnate, industrial designer, investor, and media proprietor. He was the co-founder, chairman, and CEO of Apple Inc. Jobs helped drive the development of the personal computer and popularized graphical user interfaces. He played a major role in the music industry and popularized the digital music player with the iPod. Jobs also helped revolutionize the mobile phone industry with the iPhone. He is considered one of the most influential entrepreneurs and leaders of the late 20th century.