iPod vs iPad vs iPhone

Tadi when I having lunch with my friends at Fendi Ikan Bakar @ Kelana Jaya, I heard a group of guys who sitted near to my meja talk about iPad.. One of the guy said,

"Nowadays mana ada org pakai iPod lagi dah..skrang iPad laa.."

Then I asked myself.. 'Aku pernah dengar pasal iPad ni..but I didn't know the details about the device..'

So, here let me share links with you guys what are these devices are about. I'm included info about iphone also.