Tablet personal computer - Tablet PC

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What is Tablet PC?

For tablet devices released with other operating systems than Microsoft Windows XP/2000/7 installed, like iOS or Android, see Tablet computer. HP Compaq tablet PC with rotating/removable keyboardA tablet personal computer or tablet PC is tablet-sized computer that also has the key features of a full-size personal computer. A tablet PC is essentially a small laptop computer, equipped with a rotatable touchscreen as an additional input device, and running a standard (or lightly adapted) PC operating system like Windows or Linux. The term was made popular with the Microsoft Tablet PC concept presented by Microsoft in 2001.Today, the term tablet is also used to refer to computer-like devices operated primarily by a touch screen but not intended to run general PC operating systems or applications.

System software

Following Windows for Pen Computing, Microsoft has been developing support for tablets running Windows under the Microsoft Tablet PC name.According to a 2001 Microsoft definition of the term, "Microsoft Tablet PCs" are pen-based, fully functional x86 PCs with handwriting and voice recognition functionality. Tablet PCs use the same hardware as normal laptops but add support for pen input. For specialized support for pen input, Microsoft released Windows XP Tablet PC Edition. Today there is no tablet specific version of Windows but instead support is built in to both Home and Business versions of Windows Vista and Windows 7. Tablets running Windows get the added functionality of using the touchscreen for mouse input, hand writing recognition, and gesture support. Following Tablet PC, Microsoft announced the UMPC initiative in 2006 which brought Windows tablets to a smaller, touch-centric form factor. This was relaunched in 2010 as Slate PC, to promote tablets running Windows 7, ahead of Apple's iPad launch.Slate PCs are expected to benefit from mobile hardware advances derived from the success of the netbooks.

While many tablet manufacturers are moving to the ARM architecture with lighter operating systems, Microsoft has stood firmly by Windows.Though Microsoft has Windows CE for ARM support it has kept its target market for the smartphone industry with Windows Mobile and the new Windows CE 6 based Windows Phone 7. Some manufacturers, however, still have shown prototypes of Windows CE-based tablets running a custom shell.

The succession of Windows Vista has meant that Tablet PC functionality no longer requires a separate edition; with the exception of Home Basic and Starter, Tablet PC support is built into all editions of Windows Vista. This extends the handwriting recognition, ink collection, and additional input methods to any computer running Vista even if the input device is an external digitizer, a touch screen, or even a regular mouse. Vista also supports multi-touch functions and gestures (originally developed for the Microsoft Surface version of Vista) and is now usable by the public with the release of multi-touch tablets. Windows Vista also significantly improved handwriting recognition functionality with the introduction of a handwriting recognition personalization tool as well as an automatic handwriting learning tool.

 

Windows 7 touch capability is built with Microsoft Surface technologies. This is a gesture and touch-centric UI enhancement that works with most current touch computers. Windows has a history of tablet technology including Windows XP Tablet PC Edition. Tablet PC Edition is a superset of Windows XP Professional, the difference being tablet functionality, including alternate text input (Tablet PC Input Panel) and basic drivers for support of tablet PC specific hardware. Requirements to install Tablet PC Edition include a tablet digitizer or touchscreen device, and hardware control buttons including a Ctrl-Alt-Delete SAS (Secure Attention Sequence) shortcut button, scrolling buttons, and at least one user-configurable application button.

Android and Chrome OSMain articles: Android (operating system) and Google Chrome OS Google's Linux-based Android operating system has been targeted by manufacturers for the tablet computer market following its success on smartphones due to its open nature and support for ARM systems, but some systems, like Toshiba's AC100 are more closely related to a tablet PC. There is talk of tablet support from Google coming to its web-centric Chrome OS. Some vendors such as Motorola are delaying deployment of their tablet computers until 2011, after Android is reworked to include more tablet features. Android 3.0 (Honeycomb) is the latest version of the Android platform. It is optimized specifically for devices with larger screen sizes, mainly tablets, and has access to the Android Market. Android is the software stack for mobile devices that includes operating system, middleware and key applications.

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Tablet functionality is available in all editions of Windows 7 except the Starter edition. It introduces a new Math Input Panel that recognizes handwritten math expressions and formulas, and integrates with other programs. Windows 7 also significantly improved pen input and handwriting recognition by becoming faster, more accurate, and supportive of more languages, including East Asian writing systems. Personalized custom dictionaries help with the recognition of specialized vocabulary (like medical and technical terms), and text prediction speeds up the input process to make note-taking faster. Multi-touch technology is also available on some tablet PCs, enabling more advanced interaction using touch gestures with your fingers the same way a mouse is used. Despite such advances, problems may arise with tablet functions of the OS, when, for instance, touch screen drivers are recognized as PS/2 mouse input rather than a touch input device. In such instances tablet functions may be unavailable or severely restricted in functionality. Windows applications Applications developed for the tablet PC cater to the form factor and functionality available on the platform. Many forms of applications incorporate a pen-friendly user interface and/or the ability to hand write directly in the document or interface