Steve Jobs resigns as Apple CEO !!!!!

Apple co-founder Steve Jobs has stepped down from his position as CEO of the company and Tim Cook, Apple's chief operating officer, has been named to take the helm, Apple announced Wednesday.

"I have always said if there ever came a day when I could no longer meet my duties and expectations as Apple's CEO, I would be the first to let you know. Unfortunately, that day has come," Jobs wrote in a letter to Apple employees.

Jobs has wrestled with cancer in recent years and took an indefinite leave of absence in January to focus on his health. An Apple spokeswoman declined to elaborate on why Jobs resigned at this time. He submitted his resignation Wednesday and "strongly recommend[ed]" that Cook be elected CEO, Apple said.

Jobs has been elected chairman of Apple's board, effective immediately, and Cook has been made a board member, the statement 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," Jobs wrote in his letter.

As Apple's chairman, Jobs will continue to serve Apple "with his unique insights, creativity and inspiration," Art Levinson, chairman of Genentech and an Apple board member, said in a statement. "Steve's extraordinary vision and leadership saved Apple and guided it to its position as the world's most innovative and valuable technology company."

Jobs is widely admired for returning to the struggling company in the mid-1990s and turning it into one of the most successful technology companies in the world. Under his leadership, Apple developed the iPod, iPhone and iPad -- devices that have each defined their technology categories. Now, analysts wonder if the company can continue that trend without him.