Apple co-founder Steve Wozniak says artificial intelligence (AI) is the next technological frontier.

On the day the iPhone 5 was released in Australia, with some hiccups, Mr Wozniak told business leaders in Brisbane that AI was the next logical step.

'We're still not at the stage where we can sit down with computers and say, 'Here's a problem. Now go and solve it,'' Mr Wozniak told the QUT Business Leaders Forum.

But that day wasn't too far off, he said.

'In 40 years we will have computers that are conscious, that have feelings, that have a personality.

'My iPhone will know so much about me, I won't want you humans.

'A few of us might be replaced by machines, and we might have to restructure society.'

The man who designed the world's first personal computers spoke of how far technology had come since he first began inventing.

Mr Wozniak said he fell in love with computer programming language at first sight and decided he would be an engineer for life.

'I knew it was the love of my life, for the rest of my life I was going to love these little ones and zeros,' he said.

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Wozniak eager for AI