The tablet computer and the associated special operating software is an model of pen computing technology, and thus the growth of tablets has deep historical roots.

Electrical devices by data input and output on a flat information display have exist as early as 1888. All through the 20th century many devices with these uniqueness have been ideated and created whether as blueprints, prototypes or commercial products, with the Dynabook concept in 1968 being a spiritual precursor of tablets and laptops. In addition to many academic and research systems, there were quite a few companies with commercial products in the 1980s.

During the 2000s Microsoft attempt to describe with the Microsoft Tablet PC the tablet personal computer product concept as a mobile computer for field work in business,although their devices failed to achieve widespread usage mainly due to price and usability problems that prepared them unsuitable outside of their limited intended purpose.

In April 2010 Apple Inc. release the iPad, a tablet computer with an highlighting on media consumption. The shift in purpose, jointly with increased usability, battery life, simplicity, lower weight and cost, and overall quality with deference to previous tablets, was perceived as defining a new class of consumer device and twisted the commercial market for tablets in the following year.

As a result, two particularly different types of tablet computing devices exist as of 2011, the Tablet PC and the Post-PC tablet, whose operating systems are of different origin.

Apple Ipad..