Although analysts are projecting strong sales figures, the Apple iPad has drawn some strong criticism since its unveiling in late January with plenty of pundits weighing in on why Apple's got it wrong with its tablet offering.

Ex-Microsoft boss Bill Gates is the latest industry expert to chime in with his opinion on the iPad, interesting input from someone who is pro the touch tablet form factor.

"You know, I’m a big believer in touch and digital reading, but I still think that some mixture of voice, the pen and a real keyboard - in other words a netbook - will be the mainstream on that", Gates said.

"So, it’s not like I sit there and feel the same way I did with iPhone where I say, ‘Oh my God, Microsoft didn’t aim high enough.’  It’s a nice reader, but there’s nothing on the iPad I look at and say, ‘Oh, I wish Microsoft had done it".