Steve Jobs -- the mega-genius who co-founded Apple Inc. -- has died ... reps for the company have confirmed.

Jobs was 56.

Jobs suffered a number of serious health issues over the years. In 2004, he announced he had a rare -- but treatable -- form of pancreatic cancer ... and had a tumor successfully removed from his pancreas later that year.

TMZ posted a picture of Jobs two days after he resigned as Apple's CEO in August, clearly showing a deterioration in his health.

In 2009, Jobs received a liver transplant after announcing his "health-related issues were more complex than I thought."

Jobs is survived by his wife, Laurene, and 4 children.




4:50 PM: Apple has released a statement ... reading, "Apple has lost a visionary and creative genius, and the world has lost an amazing human being.

Those of us who have been fortunate enough to know and work with Steve have lost a dear friend and an inspiring mentor. Steve leaves behind a company that only he could have built, and his spirit will forever be the foundation of Apple."

5:10 PM: Apple CEO Tim Cook sent an email to Apple staff, which reads:

Team,

I have some very sad news to share with all of you. Steve passed away earlier today.

Apple has lost a visionary and creative genius, and the world has lost an amazing  human being. Those of us who have been fortunate enough to know and work with Steve have lost a dear friend and an inspiring mentor. Steve leaves behind a company that only he could have built, and his spirit will forever be the foundation of Apple.

We are planning a celebration of Steve’s extraordinary life for Apple employees that will take place soon. If you would like to share your thoughts, memories and condolences in the interim, you can simply email rememberingsteve@apple.com.

No words can adequately express our sadness at Steve's death or our gratitude for the opportunity to work with him. We will honor his memory by dedicating ourselves to continuing the work he loved so much.

Tim