Apple co-founder Steve Wozniak has told ABC News that he suffered a minor stroke while attending a business conference in Mexico City. In a text message Thursday Wozniak said he felt dizzy Wednesday morning, then experienced vertigo before going to the hospital where a MRI revealed he had had a “minor but real stroke.” Wozniak, 73, had been scheduled to speak at the World Business Forum in Mexico City, a two-day gathering billed as the world’s most important management event. Wozniak told the New York Times that he was released from the hospital Thursday and flew back to California.