Tablets based on IBM-PC architecture
A tablet personal computer (tablet PC) is a portable personal computer equipped with a touchscreen as a primary input device, and running a (modified) classic desktop OS. designed to be operated and owned by an individual.The term was made popular as a concept presented by Microsoft in 2000 and 2001but tablet PCs now refer to any tablet-sized personal computer regardless of the (desktop) operating system.
Tablets not based on IBM-PC architecture
Many tablets do not use a traditional desktop OS or use the Wintel paradigm, nor are x86 based. Most often their OS is a Unix-like OS, such as Darwin, Linux or QNX. The first was the iPad, and others continue the common trend towards multi-touch and other natural user interface features. Some use ARM for longer battery life versus battery weight. Some have 3G mobile telephony capabilities.
Developing programs for tablet computers
A significant trait to define whether a tablet computer can be regarded as a personal computer is the ability for the final user to install arbitrary or self-developed software. The new class of devices heralded by the iPad has spurred the tendency of a walled garden approach where the vendor reserves rights as to what can be installed. The software development kits for these platforms are restricted and the vendor must approve the final application for distribution to users. Proponents of open source software deem that these restrictions on software installation and lack of administrator rights make this category one that, in their view, cannot be properly named personal computers. But newer mobile operating system based tablet computers may abandon the walled garden concept, and be like personal computers in this regard.
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