Best hard drives

                    What's the best hard drive to buy? Your hard drive is out of date if its capacity is measured in gigabytes. Even a terabyte of space can seem cramped when you're stockpiling your movies, music and photograph collections.

Two terabytes isn't a bad starting point unless you're heavily into editing movies, and with prices tumbling, you don't have to pay much to enjoy excellent performance.


 At the moment, buying a hard drive gives you exactly two choices: a flash-based SSD, or a regular mechanical drive. The key difference is that, while SSD offers far superior performance, it comes with a price to match and you only get a few tens of gigabytes before the cost ceases to be effective.

Traditional drives are much slower, but hold far, far more, and in most cases you simply don't need the extra performance. Everything will still work just fine, just not quite as quickly.

As long as you're not used to the speed of Windows booting from SSD though, you're unlikely to chafe at even a mid-range drive's performance. There's plenty of life in the traditional style yet, and it remains the best way to handle your electronic life.(...)

X-radiation

                  X-radiation (composed of X-rays) is a form of electromagnetic radiation. X-rays have a wavelength in the range of 0.01 to 10 nanometers, corresponding to frequencies in the range 30 petahertz to 30 exahertz (3×10¹⁶ Hz to 3×10¹⁹ Hz) and energies in the range 120 eV to 120 keV. They are shorter in wavelength than UV rays and longer than gamma rays. In many languages, X-radiation is called Röntgen radiation, afterWilhelm Conrad Röntgen, who is usually credited as its discoverer, and who had named it X-radiation to signify an unknown type of radiation. Correct spelling of X-ray(s) in the English language includes the variants x-ray(s) and X ray(s). XRAYis used as the phonetic pronunciationfor the letter x.(...)

Samsung Galaxy Note

                       The Samsung Galaxy Note is an Android smartphone and tablet computer that was introduced in October 2011. It has attracted attention because of its 5.3-inch screen size – between that of conventional smartphones and tablets – and because of its includedstylus.(...)

Nanotechnology

              Nanotechnology (sometimes shortened to "nanotech") is the study of manipulating matter on an atomic and molecular scale. Generally, nanotechnology deals with developing materials, devices, or other structures possessing at least one dimension sized from 1 to 100 nanometres.Quantum mechanical effects are important at this quantum-realm scale.

Nanotechnology is very diverse, ranging from extensions of conventional device physics to completely new approaches based upon molecular self-assembly, from developing new(...)

Apple ipod nano

             Late late week, Apple announced a worldwide replacement program for owners of the first-generation iPod nano. The program was instituted due to battery issues that could cause the devices to overheat and in extreme cases catch fire. 

While Apple officially notes that it may take up to six weeks for customers to receive their replacement devices, some users are reporting that their replacements have already arrived. And while some had hoped that Apple might offer newer-generation iPod nano models given a potential shortage of units that officially went out of production nearly five years ago, the replacement units are indeed still first-generation iPod nanos. (...)

Samsung Galaxy Tab

                  The Samsung Galaxy Tab is an Android-based tablet computer produced by Samsung  introduced on 2 September 2010 at the IFA in Berlin.

The Galaxy Tab has a 7-inch (180 mm) TFT-LCD touchscreen, Wi-Fi capability, a 1.0 GHz ARM Cortex-A8 Samsung Exynos 3110 (code-named "Hummingbird") processor, the Swype input system, a 3.2 MP rear-facing camera and a 1.3 MP front-facing camera for video calls. It runs the Android 2.2 (Froyo) operating system, and supports telephone functionality as speaker phone, via provided wired ear piece or Bluetooth earpieces (except models sold in the US). It can download videoconferencing apps such as Tango as alternative to telephone functionality.

see more-http://en.wikipedia.org/wiki/Samsung_Galaxy_Tab

some of info about Mac OS

                  On January 24, 1984, Apple Computer Inc. (now Apple Inc.) introduced the Macintosh personal computer, with the Macintosh 128K model, which came bundled with what was later renamed the Mac OS, but then known simply as the System Software.The Macintosh is generally credited with popularizing the graphical user interface. The Mac OS has been pre-installed on almost every Macintosh computer sold. The operating system is also sold separately on the Mac App Store for $29.99. It is also sold on a USB flash drive for $69.00. (Mac OS X Lion only.) The original Macintosh system software was partially based on the Lisa OS, previously released by Apple for the Lisa computer in 1983 and, as part of an agreement allowing Xerox to buy shares in Apple at a favorable rate, it also used concepts from the Xerox ARC Xerox Alto, which Steve Jobs and several other Macintosh team members had previewed.(...)

Huawei E5

              The E5 is a mobile Wi-Fi device (or MiFi) produced by Huawei Technologies, and is part of the company’s mobile Wi-Fi series that includes the E5830s, E585, E583c and E586. The E5 series connect to other devices using a wireless interface. The devices are pocket size and allow users to access the Internet through any Wi-Fi device, mobile phone, game console, digital camera, notebook and personal digital assistant (PDA).

Global Positioning System (GPS)

                         The Global Positioning System (GPS) is a space-based satellite navigation system that provides location and time information in all weather, anywhere on or near the Earth, where there is an unobstructed line of sight to four or more GPS satellites. It is maintained by the United Statesgovernment and is freely accessible by anyone with a GPS receiver.

The GPS program provides critical capabilities to military, civil and commercial users around the world. In addition, GPS is the backbone for modernizing the global air traffic system(....)

Xperia phones

                 Xperia is the family of Sony (and formerly Sony Ericsson) smartphones. The line has been manufactured since 2008 and now accounts for more than half of the company's mobile phone sales. The name Xperia is derived from the word "experience", and was first used in theXperia X1 tagline, "I (Sony Ericsson) xperia the best". As of 2011, all Xperia phones have been smartphones, except for the Xperia Pureness(...)

Samsung Galaxy S

The Samsung Galaxy S is an Android smartphone that was announced by Samsung in March 2010. It features a 1 GHz ARM"Hummingbird" processor, 8–16 GB internal Flash memory, a 4-inch 480×800 pixel Super AMOLED capacitive touchscreen display, Wi-Ficonnectivity, a 5-megapixel camera with a maximum resolution of 2560x1920 and, on select models, a front-facing 0.3 MP VGA camera (640x480). The base version of the phone, the GT-I9000, was quickly followed by variant models for the US carriers such as the Epic 4G, Vibrant, Captivate, Fascinate, and Mesmerize.

The Samsung Galaxy S features a PowerVR graphics processor, yielding 20 million triangles per second, making it the fastest graphics processing unit in any smartphone at the time of release. Also, upon release, the Galaxy S was both the first Android phone to be certified for DivX HD, and at 9.9 mm was the thinnest smartphone available(....)

iPhone

                The iPhone  is a line of Internet- and multimedia-enabled smartphones marketed by Apple Inc. The first iPhone was unveiled by Steve Jobs, then CEO of Apple, on January 9, 2007, and released on June 29, 2007. The 5th generation iPhone, the iPhone 4S, was announced on October 4, 2011, and released 10 days later.

An iPhone can function as a video camera (video recording was not a standard feature until the iPhone 3GS was released), a camera phone, aportable media player, and an Internet client with email and web browsing capabilities, can send texts and receive visual voicemail, and has both Wi-Fi and 3G connectivity. The user interface is built around the device's multi-touch screen, including a virtual keyboard rather than a physical one.(....)