Former chief executive and co-founder of US technology giant Apple Steve Jobs has died, the company says. He was 56.
"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.
Jobs announced he was suffering from pancreatic cancer in 2004.
Fellow internet pioneer Bill Gates said Jobs' "profound impact" would " be felt for many generations to come".
Mr Gates added: "For those of us lucky enough to get to work with him, it's been an insanely great honour. I will miss Steve immensely."
'The face of Apple'"Apple has lost a visionary and creative genius, and the world has lost an amazing human being," Apple said.
"Steve leaves behind a company that only he could have built, and his spirit will forever be the foundation of Apple."
He was one of the world's best-known business leaders and introduced the iPod and the iPhone to the world.
His death came a day after Apple unveiled its latest iPhone 4S model.
Jobs announced in 2004 that he was suffering from pancreatic cancer and had a liver transplant five years later.
In January, he took medical leave, before resigning as CEO in August and handing over his duties to Tim Cook.
<!-- Embedding the audio player --> <!-- This is the embedded player component -->In his resignation letter, Jobs said: "I believe Apple's brightest and most innovative days are ahead of it. And I look forward to watching and contributing to its success in a new role."
However, Jobs stayed on as Apple's chairman.
More than almost any other business leader, he was indistinguishable from the company he co-founded in the 1970s.
As the face of Apple, he represented its dedication to high-end technology and fashionable design.
And inside the company he exerted a level of influence unheard of in most businesses.
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