Apple co-founder and former chief executive Steve Jobs has died at the age of 56, the US technology company has announced.

The pioneering businessman, who was the mind behind the revolutionary iPhone and iPad devices, had been battling pancreatic cancer.

He stepped down from his post as Apple's chief executive in August saying he could no longer handle the job due to his illness.

Mr Jobs, who lived in Silicone Valley, California, died on Wednesday surrounded by his family..

Apple said it was "deeply saddened" by the news.

A company spokesman said: "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.

"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."

Bill Gates, the founder of rival technology company Microsoft and friend of Mr Jobs, said he would miss him "immensely".

"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," he added.

Facebook founder Mark Zuckerberg wrote on his Facebook page: "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."