Answer Best answer as chosen by user sksat2004
They're all computers on the inside.
This may not help a lot, but here goes:
Smartphones are hand-sized (about 4.5" diagonal) computers that connect to a cellular network to make calls and to access the internet. Smartphones usually have a touch screen and don't have a hardware keyboard.
<div>Tablets are usually book-sized (about 7" to 10" diagonal) computers that connect to a cellular network and/or a wifi network to access the internet. Most tablets can't make calls, even though they tend to run the same Operating Systems as smartphones. Tablets usually have a touch screen and don't have a hardware keyboard.
Apple's iPad tablet and Apple's iPhone smartphone both run Apple's iOS and use the same apps from Apples iTunes store. Apple's iMac and MacBook family of computers run a different OS, called OS X.
Ice Cream Sandwich is a version of Google's smartphone OS called Android. A lot of manufacturers, in fact just about everyone except Apple, Microsoft and RIM, make smartphones and tablets that run Android. There aren't any "PCs" running Android.
Microsoft has a smartphone OS called Windows Phone, that runs only on smartphones. Microsoft has a separate version of the Windows OS, called Windows RT, that was developed as a tablet OS to run on Microsoft's Surface RT tablet. It's not catching on so much because it doesn't share apps with Windows Phone or Windows 8. Other manufacturers have pretty much abandoned their plans for Windows RT based tablets. Windows (currently Windows 8) runs on "regular" PCs and laptops. However, Windows 8 is a touch-centric OS. Microsoft has a Windows Pro tablet running Windows 8. Other manufacturers also have tablets, hybrids, convertibles and touch screen laptops running Windows 8.
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