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Bill Gates has spoken of the loss of Steve Jobs, saying he is "deeply saddened" to hear of the Apple founder's passing.

Jobs lost his long battle with pancreatic cancer on October 5 aged 56.

Writing on his personal website, the Microsoft magnate wrote: "I'm truly saddened to learn of Steve Jobs' death. [My wife] Melinda and I extend our sincere condolences to his family and friends, and to everyone Steve has touched through his work.

"Steve and I first met nearly 30 years ago, and have been colleagues, competitors and friends over the course of more than half our lives."

He continued: "The world rarely sees someone who has had the profound impact Steve has had, the effects of which will be felt for many generations to come.

"For those of us lucky enough to get to work with him, it's been an insanely great honour.  I will miss Steve immensely."

Facebook boss mark Zuckerberg has also paid tribute to Jobs, writing on his profile: "Steve, thank you for being a mentor and a friend. Thanks for showing that what you build can change the world. I will miss you."

US president Barack Obama described Jobs as "a bold, brave and talented visionary who changed the world."

How Steve Jobs changed the world...