Steve Jobs, who built the world’s most valuable technology company by creating devices that changed how people use electronics and revolutionized the computer, music and mobile-phone industries, died. He was 56. Jobs, who resigned as Apple Inc. (AAPL) chief executive officer on Aug. 24, 2011, passed away today, the Cupertino, California-based company said today. He was diagnosed in 2003 with a neuroendocrine tumor, a rare form of pancreatic cancer, and had a liver transplant in 2009. Apple disclosed Jobs’s passing in a statement. Jobs embodied the Silicon Valley entrepreneur. He was a long-haired counterculture technophile who dropped out of college and started a computer company in his parents’ garage on April Fools’ Day, 1976. He had no formal technical training and no real business experience.