Steve Jobs, the transcendent Silicon Valley entrepreneur who reinvented the world's computing, music and mobile phone industries and changed the daily habits of millions around the globe, died on Wednesday at the age of 56.

His death after a years-long battle with pancreatic cancer sparked an immediate outpouring of tributes as world leaders, business rivals and fans alike lamented the tragedy of his premature passing and celebrated his monumental achievements.
   
"The world has lost a visionary. And there may be no greater tribute to Steve's success than the fact that much of the world learned of his passing on a device he invented," U.S.
President Barack Obama said in a statement.

Fans paid homage to Jobs outside Apple stores around the world, from Los Angeles to Sydney. Outside one store in New York City, mourners laid candles, bouquets of flowers, an apple and an iPod Touch in a makeshift memorial. In San Francisco, they held up black-and-white portraits of Jobs on their iPads.

Many websites, including Apple's own, were transformed into online memorials, a testament to the digital creativity that Jobs inspired.

"For those of us lucky enough to get to work with him, it's been an insanely great honor," said Microsoft's Bill Gates, who once triumphed over Jobs but has seen his legendary status overtaken by the Apple co-founder in recent years.

Jobs was surrounded by his wife and immediate family when he died in Palo Alto, California, Apple said late on Wednesday.
Other details were not immediately available.

Jobs stepped down as CEO in August and handed the reins to long-time operations chief Tim Cook. With a passion for minimalist design and a genius for marketing, Jobs laid the groundwork for the company to continue to flourish after his death, most analysts and investors say.

But Apple still faces challenges in the absence of the man who was its chief product designer, marketing guru and salesman nonpareil. Phones running Google's Android software are gaining share in the smartphone market, and there are questions over what the next big thing is in Apple's product line.

A college drop-out and the son of adoptive parents, Jobs changed the technology world in the late 1970s, when the Apple II became the first personal computer to gain a wide following.

He did it again in 1984 with the Macintosh, which built on the breakthrough technologies developed at Xerox Parc and elsewhere to create the personal computing experience as we know it today.   

The rebel streak that's central to his persona got him tossed out of the company in 1985, but he returned in 1997 and after a few years began the rollout of a troika of products -- the iPod, the iPhone and the iPad -- that again upended the established order in major industries.   

A diagnosis of a rare form of pancreatic cancer in 2004 initially cast only a mild shadow over Jobs and Apple, with the CEO asserting that the disease was treatable. But his health deteriorated rapidly over the past several years, and after two temporary leaves of absence he stepped down as chief executive and became Apple's chairman in August.

Jobs' death came just one day after Cook presented a new iPhone at the kind of gala event that became Jobs' trademark.
Apple on Wednesday paid homage to its visionary leader by changing its website to a big black-and-white photograph of him with the caption "Steve Jobs: 1955-2011."    

The flags outside the company's headquarters at 1 Infinite Loop flew at half mast. Employees left flowers on a bench and a mourner played music on bagpipes in an impromptu tribute.

Cook said in a statement that Apple planned to hold a celebration of Jobs' life for employees "soon".

"Steve's brilliance, passion and energy were the source of countless innovations that enrich and improve all of our lives.
The world is immeasurably better because of Steve," Apple said in a statement.

"His greatest love was for his wife, Laurene, and his family. Our hearts go out to them and to all who were touched by his extraordinary gifts."    

The announcement of Jobs' death came after almost all trading in US stocks had finished for the day. Apple's stock was last quoted at $377.22, a tad lower than its Nasdaq close of $378.25.  - Reuters