A tablet personal computer

A tablet personal computer (Tablet PC) is tablet computer having the main characteristics of a personal computer in the tradition of the Microsoft Tablet PC, as a machine operated by an end-user with no intervening computer operator. A typical tablet PC is a laptop computer, equipped with a rotateable 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 as a concept presented by Microsoft in 2001.[1] 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.

Contents

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1 System software

1.1 Microsoft Windows

1.1.1 Windows applications

1.2 Linux

1.2.1 Android and Chrome OS

1.2.2 MeeGo

1.3 Apple

1.3.1 Mac OS X

2 Display size trends

3 Timeline of tablet PC history

4 See also

5 References

6 External links

[edit] System software

[edit] Microsoft Windows

Following Windows for Pen Computing, Microsoft has been developing support for tablets running Windows under the Microsoft Tablet PC name.[2] According to a 2001 Microsoft definition[3] 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.[4] 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.[5][6][7] 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.[8]

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,[9] 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.

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.[10] 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 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. Among the first tablet PCs launched in 2010 based on the Windows 7 operating system are bModo12 from bModo[11] and Samsung Galaxy. Windows has a history of tablet technology including Windows XP Tablet PC Edition.[12][13] 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 shortcut button, scrolling buttons, and at least one user-configurable application button.

[edit] 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.

A brief description of the applications included follows:

Experience Pack

Ink Desktop: an Active Desktop control designed to run in the background and allow the user to write directly on the desktop.

Snipping Tool: a screen capture application which allows the tablet pen to be used to select a portion of the screen and then annotate it and save as a

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