keyboard in the case [...]
parts can be replaced easily [...]
very small virtual keyboard [...]
turns on almost instantly [...]
does not usually have a battery [...]
portable, but usually no touch screen [...]
the only upgrade is a replacement [...]
best for serious computing on the move [...]
best camera substitute [...]
best paperback replacement [...]
just fits in a small briefcase [...]
between a mobile phone and a laptop [...]
between a tablet and a desktop [...]
best for programming [...]