The iPad Pro is a series of tablet computers, positioned as a premium model of Apple's iPad tablet computer. It runs iPadOS, a tablet-optimized version of the iOS operating system.
12.9" iPad Pro
iPad Pro and a second-generation Apple Pencil (left)
Image: I Pad 2017 tablet
A tablet computer, commonly shortened to tablet, is a mobile device, typically with a mobile operating system and touchscreen display processing circuitry, and a rechargeable battery in a single, thin and flat package. Tablets, being computers, have similar capabilities, but lack some input/output (I/O) abilities that others have. Modern tablets largely resemble modern smartphones, the only differences being that tablets are relatively larger than smartphones, with screens 7 inches (18 cm) or larger, measured diagonally, and may not support access to a cellular network. Unlike laptops, tablets usually run mobile operating systems, alongside smartphones.
Apple's iPad (left) and Amazon's Fire, two popular tablet computers, displaying the Wikipedia website
Apple Newton MessagePad, Apple's first produced tablet, released in 1993
A Fujitsu Siemens Lifebook tablet running Windows XP, released in 2003
The Nokia N800, the second tablet manufactured by Nokia