Yes, there are several types of tablet PCs. A slate is just a screen which is also the input device, like a touchscreen or a pen/stylus input. The Apple iPad is a good example of a slate design. A convertible also has a keyboard which can fold or swivel out to be used like a regular laptop.
tablets
Slate is a fine-grained, foliated metamorphic rock that is created by the alteration of shale or mudstone by low-grade regional metamorphism. It is popular for a wide variety of uses such as roofing, flooring and flagging because of its durability and attractive appearance.
plain
Nimbostratus clouds form at the frontal boundary.
gemstone
cumulus clouds
Slate has a conchoidal fracture. This happens when a blow is strong enough to peel off a flake of the slate.
Metamorphic.
Slate
The first metamorphic rock to form from shale is slate. With further metamorphosis you get phyllite, then schist, then gneiss.
Slate
Slate and Marble are metamorphic rocks. Slate's parent rock is shale and Marble's parent rock is limestone.
Corvair
Convertible pesos
foliated
The 2013 Maserati Granturismo-Convertible has a 6-speed shiftable automatic.
The 2014 Volkswagen Beetle-Convertible has a 6-speed shiftable automatic.
The 2011 Maserati Granturismo-Convertible has a 6-speed shiftable automatic.