as of now, tablets, incl iPad are not good for a laptop/Pc replacement. As of now they are used for 4 things
Media consumtion
Lightweight Office works
Lighweight Browsing (no Flash, Magazine apps not matured enuf even in iPad)
Appstore ( not available in all android tablets)
It will take long time to replace PC but thats where the whole IT cos are headed. It will happen one day
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