The 73-year-old was admitted to ABC Hospital in the city after suffering from a possible stroke. He was well enough to tell the papers that he felt dizzy while working on his computer in the morning. He experienced vertigo and could not walk,.

Wozniak told ABC News that an MRI scan showed he'd had a "minor but real stroke." He was no longer in the hospital and was flying home to the US.  His team is showing up to take him home. 

After giving the speech, he told his wife he was "feeling strange" and started exhibiting concerning symptoms. His wife said he needed to go to the hospital but Wozniak reportedly declined saying he would be fine.

Upon his wife's insistence, he agreed to go to the hospital, the source said. He appeared to be suffering from vertigo-like symptoms.

Wozniak cofounded Apple with Steve Jobs in 1976 and built the company's first computers. He left Apple in 1985 and sold most of his company stock.