Other features tablet

                                                                Other features tablet

 

Other features tablet

• Accelerometer: An accelerometer is a device that detects the physical movements of the tablet. This allows greater flexibility of use since tablets do not necessarily have a fixed direction of use. The accelerometer can also be used to detect the orientation of the tablet relative to the center of the earth, but can also detect movement of the tablet, both of which can be used as an alternative control interface for a tablet's software.
• Ambient light and proximity sensors are additional "senses", that can provide controlling input for the tablet.
• Storage drive: Large tablets use storage drives similar to laptops, while smaller ones tend to use drives similar to MP3 players or have on-board flash memory. They also often have ports for removable storage such as Secure Digital cards. Due to the nature of the use of tablets, solid-state memory is often preferable due to its better resistance to damage during movement.
• Wireless: Because tablets by design are mobile computers, wireless connections are less restrictive to motion than wired connections. Wi-Fi connectivity has become ubiquitous among tablets. Bluetooth is commonly used for connecting peripherals and communicating with local devices in place of a wired USB connection.
• 3D: Following mobile phone, there are also 3D slate tablet with dual lens at the back of the tablet and also provided with blue-red glasses.
• Docking station: Some newer tablets are offering a optional docking station that has a full size qwerty keyboard and USB port, providing both portability and flexibility.

Other features tablet 

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Touchscreen hardware tablets

                                            Touchscreen hardware tablets

Touchscreen hardware tablets

Touchscreens are usually one of two forms;

• Resistive touchscreens are passive and can respond to any kind of pressure on the screen. They allow a high level of precision (which may be needed, when the touch screen tries to emulate a pointer for precision pointing, which in Tablet personal computers is common) but may require calibration to be accurate. Because of the high resolution of detection, a stylus or fingernail is often used for resistive screens. Although some possibility exist for implementing multi-touch on a resistive touch-screen, the possibilities are quite limited. As modern tablet computers tend to heavily lean on the use of multi-touch, this technology has faded out on high-end devices where it has been replaced by capacitive touchscreens.
• Capacitive touchscreens tend to be less accurate, but more responsive than resistive screens. Because they require a conductive material, such as a finger tip, for input, they are not common among (stylus using) Tablet PCs but are more prominent on the smaller scale "tablet computer" devices for ease of use, which generally do not use a stylus, and need multi-touch capabilities.

Other touch technology used in tablets include:

• Palm recognition. It prevents inadvertent palms or other contacts from disrupting the pen's input.
• Multi-touch capabilities, which can recognize multiple simultaneous finger touches, allowing for enhanced manipulation of on-screen objects.

Some professional-grade Tablet PCs use pressure sensitive films that additionally allow pressure sensitivity such as those on graphics tablets.
Concurrently capacitive touch-screens, which use finger tip detection can often detect the size of the touched area, and can make some conclusions to the pressure force used, for a similar result.

Touchscreen hardware tablets: http://pc-tablets-review.blogspot.com/

Touch user interface tablet

                                 Touch user interface tablet

Touch user interface tablet

                A key and common component among tablet computers is touch input. This allows the user to navigate easily and intuitively and type with a virtual keyboard on the screen. The first tablet to do this was the GRiDPad by GRiD Systems Corporation; the tablet featured both a stylus,a pen-like tool to aid with precision in a touchscreen device as well as an on screen keyboard.
The event processing of the operating system must respond to touches rather than clicks of a keyboard or mouse, which allows integrated hand-eye operation, a natural part of the somatosensory system. Although the device implementation differs from more traditional PCs or laptops, tablets are disrupting the current vendor sales by weakening traditional laptop PC sales in favor of the current tablet computers. This is even more true of the "finger driven multi-touch" interface of the more recent tablet computers, which often emulate the way actual objects behave.

Touch user interface tablet

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Post-PC" tablets

                                                  Post-PC" tablets

 

Post-PC" tablets

              Since mid-2010, new tablet computers have been introduced with mobile operating systems that forgo the Wintel paradigm,have a different interface instead of the traditional desktop OS, and represent a new type of computing device. These "post-PC" mobile OS tablet computer devices are normally finger driven and most frequently use capacitive touch screens with multi-touch capabilities instead of the simple resistive touchscreens of typical stylus driven systems.
The most successful of these was the Apple iPad using the iOS operating system. Samsung's Galaxy Tab and others followed, continuing the now common trends towards multi-touch and other natural user interface features, as well as flash memory solid-state storage drives and "instant on" warm-boot times; in addition, standard external USB and Bluetooth keyboards can often be used. Most frequently the operating system running a tablet computer that's not based on the traditional PC architecture is based on a Unix-like OS, such as Darwin, Linux or QNX. Some have 3G mobile telephony capabilities.

              In forgoing the x86 precondition (a requisite of Windows compatibility), most tablet computers released since mid-2010 use a version of an ARM architecture processor for longer battery life versus battery weight, heretofore used in portable equipment such as MP3 players and cell phones. Especially with the introduction of the ARM Cortex family, this architecture is now powerful enough for tasks such as       internet browsing, light production work and gaming^.
A significant trait of tablet computers not based on the traditional PC architecture is that the main source of 3rd party software for these devices tends to be through online distribution, rather than more traditional methods of boxed software or direct sales from software vendors. These sources, known as "app stores," provide centralized catalogues of software from both 1st and 3rd parties, and allow simple "one click" on-device software purchasing, installation, and updates.

Post-PC" tablets

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