The Nokia N gives you an amazing total entertainment experience. The 3. This universal folio case includes a swell Bluetooth keyboard and built-in collapsible kickstand fo The Nokia E73 Mode weighs 4. Its mAh lithium-ion battery is rated at up to 13 hours of talk time, and up to hours 22 days of standby time. It ru Black The Nokia E71x weighs 4. Its mAh lithium-ion battery is rated at up to 5 hours of talk time, and up to hours The Nokia Surge weighs 4.
Its mAh lithium-polymer battery is rated at up to 4. Product Description Enjoy fast application processing and multitasking on a live Dashboard. The innovative Half-QWERTY Keyboard from Matias is a standard desktop keyboard that allows those with limited or no use of one hand to continue typing with the other hand in an easy and natural manner Display Color: Operation System: Screen LCD Type: Touch Screen Type: Although early batteries were of value for experimental purposes, in practice their voltages fluctuated.
It consisted of a pot filled with a copper sulfate solution, in which was immersed an unglazed earthenware container filled with sulfuric acid.
These wet cells used liquid electrolytes, which were prone to leakage and spillage if not handled correctly, many used glass jars to hold their components, which made them fragile and potentially dangerous. These characteristics made wet cells unsuitable for portable appliances, near the end of the nineteenth century, the invention of dry cell batteries, which replaced the liquid electrolyte with a paste, made portable electrical devices practical.
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Batteries convert chemical energy directly to electrical energy, a battery consists of some number of voltaic cells. Camera phone — A camera phone is a mobile phone which is able to capture photographs. Most camera phones also record video, most camera phones are simpler than separate digital cameras. Their usual fixed-focus lenses and smaller sensors limit their performance in poor lighting, lacking a physical shutter, some have a long shutter lag.
Photoflash is typically provided by an LED source which illuminates less intensely over a longer exposure time than a bright. Optical zoom and tripod screws are rare and none has a hot shoe for attaching an external flash, some also lack a USB connection or a removable memory card. Most have Bluetooth and WiFi, and can make geotagged photographs, some of the more expensive camera phones have only a few of these technical disadvantages, but with bigger image sensors, their capabilities approach those of low-end point-and-shoot cameras.
In the smartphone era, the sales increase of camera phones caused point-and-shoot camera sales to peak about Most model lines improve their cameras every year or two, most smartphones only have a menu choice to start a camera application program and an on-screen button to activate the shutter. Some also have a camera button, for quickness and convenience. The principal advantages of camera phones are cost and compactness, indeed for a user who carries a mobile phone anyway, smartphones that are camera phones may run mobile applications to add capabilities such as geotagging and image stitching.
However, the screen, being a general purpose control, lacks the agility of a separate cameras dedicated buttons. The latest generation of cameras also apply distortion, vignetting. Most camera phones have a digital zoom feature, an external camera can be added, coupled wirelessly to the phone by Wi-Fi. They are compatible with most smartphones, images are usually saved in the JPEG file format, except for some high-end camera phones which have also RAW feature and the Android 5.
Windows Phones can be configured to operate as a camera if the phone is asleep. The name comes from the order of the first six keys on the top left letter row of the keyboard, the QWERTY design is based on a layout created for the Sholes and Glidden typewriter and sold to Remington in In October , Sholes filed a patent application for his writing machine he developed with the assistance of his friends Carlos Glidden.
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Firstly, characters were mounted on arms or typebars, which would clash. Secondly, its point was located beneath the paper carriage, invisible to the operator. Consequently, jams were especially serious, because the typist could only discover the mishap by raising the carriage to inspect what had been typed, the solution was to place commonly used letter-pairs so that their typebars were not neighboring, avoiding jams. Sholes struggled for the five years to perfect his invention.
The study of bigram frequency by educator Amos Densmore, brother of the financial backer James Densmore, is believed to have influenced the arrangement of letters, others suggest instead that the letter arrangement evolved from telegraph operators feedback. In November he changed the arrangement of the half of the alphabet, O to Z.
These adjustments included placing the R key in the previously allotted to the period key.
Typists who learned on these machines learned the habit of using the uppercase letter I for the one. In early designs, some characters were produced by printing two symbols with the carriage in the same position. For instance, the point, which shares a key with the numeral 1 on modern keyboards, could be reproduced by using a three-stroke combination of an apostrophe, a backspace. Facebook — Facebook is an American for-profit corporation and an online social media and social networking service based in Menlo Park, California.
Facebook gradually added support for students at other universities. Since , anyone age 13 and older has been allowed to become a user of Facebook, though variations exist in the minimum age requirement. The Facebook name comes from the face book directories often given to United States university students, Facebook may be accessed by a large range of desktops, laptops, tablet computers, and smartphones over the Internet and mobile networks. After registering to use the site, users can create a user profile indicating their name, occupation, schools attended and so on.
Additionally, users may join common-interest user groups organized by workplace, school, hobbies or other topics, in groups, editors can pin posts to top. Additionally, users can complain about or block unpleasant people, because of the large volume of data that users submit to the service, Facebook has come under scrutiny for its privacy policies. Facebook makes most of its revenue from advertisements which appear onscreen, Facebook, Inc.
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As of April , Facebook was the most popular social networking site in the world, Facebook classifies users from the ages of 13 to 18 as minors and therefore sets their profiles to share content with friends only. Zuckerberg wrote a program called Facemash on October 28, while attending Harvard University as a sophomore, to accomplish this, Zuckerberg hacked into protected areas of Harvards computer network and copied private dormitory ID images.
Facemash attracted visitors and 22, photo-views in its first four hours online, the site was quickly forwarded to several campus group list-servers, but was shut down a few days later by the Harvard administration. Zuckerberg faced expulsion and was charged by the administration with breach of security, violating copyrights, Zuckerberg expanded on this initial project that semester by creating a social study tool ahead of an art history final exam.
He uploaded Augustan images to a website, each of which was featured with a corresponding comments section and he shared the site with his classmates, and people started sharing notes. The following semester, Zuckerberg began writing code for a new website in January and he said that he was inspired by an editorial about the Facemash incident in The Harvard Crimson. On February 4,, Zuckerberg launched Thefacebook, originally located at thefacebook.
The three complained to The Harvard Crimson and the newspaper began an investigation and they later filed a lawsuit against Zuckerberg, subsequently settling in for 1. Membership was initially restricted to students of Harvard College, within the first month, eduardo Saverin, Dustin Moskovitz, Andrew McCollum, and Chris Hughes joined Zuckerberg to help promote the website. Mobile phone — A mobile phone is a portable telephone that can make and receive calls over a radio frequency link while the user is moving within a telephone service area.
The radio frequency link establishes a connection to the systems of a mobile phone operator. Most modern mobile telephone services use a network architecture, and, therefore. Mobile phones which offer these and more general computing capabilities are referred to as smartphones, the first handheld mobile phone was demonstrated by John F. Mitchell and Martin Cooper of Motorola in , using a handset weighing c. In , the DynaTAC x was the first commercially available mobile phone. In first quarter of , the top smartphone manufacturers were Samsung, Apple, a handheld mobile radio telephone service was envisioned in the early stages of radio engineering.
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In , Finnish inventor Eric Tigerstedt filed a patent for a pocket-size folding telephone with a thin carbon microphone. Early predecessors of cellular phones included analog radio communications from ships, the race to create truly portable telephone devices began after World War II, with developments taking place in many countries. These 0G systems were not cellular, supported few simultaneous calls, the first handheld mobile phone was demonstrated by John F.
The first commercial automated cellular network was launched in Japan by Nippon Telegraph and this was followed in by the simultaneous launch of the Nordic Mobile Telephone system in Denmark, Finland, Norway, and Sweden. Several other countries followed in the early to mids. These first-generation systems could support far more simultaneous calls but still used analog cellular technology, in , the DynaTAC x was the first commercially available handheld mobile phone. This was followed by 3.
By , it had become clear that, at point, 3G networks would be overwhelmed by the growth of bandwidth-intensive applications. Consequently, the industry began looking to data-optimized fourth-generation technologies, with the promise of speed improvements up to ten-fold over existing 3G technologies. Mobile operating system — A mobile operating system is an operating system for smartphones, tablets, or other mobile devices.
This distinction is becoming blurred in some operating systems that are hybrids made for both uses. So-called mobile operating systems, or even only smartphones running them, Mobile operating systems, are now, as of late , the most used kind, with traditional desktop OS, now a minority used kind, see usage share of operating systems. However, variations occur in popularity by regions, while desktop-minority also applies on some days in e.
By the end of , over million smartphones were sold with Research has shown that these systems may contain a range of security vulnerabilities permitting malicious base stations to gain high levels of control over the mobile device. Mobile operating system milestones mirror the development of mobile phones and smartphones, — The first smartphone, the IBM Simon, has a touchscreen, email, and PDA features.
Feature phone — Feature phone is a term typically used as a retronym to describe mobile phones which are limited in capabilities in contrast to a modern smartphone. A feature phone has additional functions over and above a basic mobile phone which is capable of voice calling. Feature phones and basic mobile phones tend to use a proprietary, custom-designed software, by contrast, smartphones generally use a mobile operating system that often shares common traits across devices.
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The first cellular phone, the Motorola DynaTAC released in , is considered a mobile phone due to its inability to do anything more than making voice calls. Feature phones were typically mid-range devices, between basic phones on the low end and enterprise-oriented smart phones on the high end, in Japan, mobile phones developed a wide array of features prior to the development of smart phones.
The introduction of smart phones has largely displaced these at the high end, many of these features were and remain specific to Japan, often requiring network support, and the resulting phones, while dominant in Japan, proved unsuccessful abroad. At the event, Steve Jobs proclaimed that the phone was not just a communication tool, at around the same time, Google was developing its Android operating system as a direct competitor to Nokias Symbian and Microsofts Windows Mobile operating systems.
Motorola had stayed too long with its aging RAZR flip phone and missed consumer trends for touchscreens, nonetheless as the iPhone was initially too expensive for mass market adoption, Nokia and Research in Motion did enjoy expanded sales as their offerings were considered a lower-priced alternative. By the turn of the decade, iOS and Android, together with less-common platforms such as BlackBerry 10, though smartphones cost more to produce, they were delivering higher profit margins than feature phones, leading to manufacturers and wireless carriers shifting towards smartphones.
As a result, smartphones now have the largest selection and advertising among carriers, in , smartphones outsold feature phones for the first time, accounting for However, their functionality and support for third-party apps purchased or downloaded via an app store or other online distribution platform are still limited in comparison to smartphones. Even as late as , smartphone penetration in North America was low, in , Apple introduced the groundbreaking iPhone and by , the iPhone and Google Android shifted the smartphone focus from the enterprise to mass market consumers.
As a result, smartphones have enjoyed the largest selection and advertising among carriers, in , feature phones accounted for 60 percent of the mobile telephones in the United States and 70 percent of mobile phones sold worldwide. It is predicted that by feature phones share will drop as smartphones become more popular, for the first time ever, in , smartphones outsold feature phones in the second quarter, according to research firm Gartner.
Smartphones accounted for A survey of 4, Canadians by Media Technology Monitor in fall suggested about 83 per cent of the population owned a cellphone. WhatsApp — WhatsApp Messenger is a freeware, cross-platform and end-to-end encrypted instant messaging application for smartphones. WhatsApp Inc. Having statuses next to names of the people, but this was not possible without an iPhone developer.
Fishman found a Russian developer on RentACoder. On February 24,, he incorporated WhatsApp Inc. Koum changed WhatsApp so that when a users status is changed, WhatsApp 2. Acton was still unemployed and managing another startup, and he decided to join the company, in October , Acton persuaded five former friends in Yahoo. He officially joined on November 1, after months at beta stage, the application eventually launched in November exclusively on the App Store for the iPhone. Koum then hired a friend who lived in Los Angeles, Chris Peiffer, to develop the BlackBerry version, WhatsApp was switched from a free to paid service to avoid growing too fast, mainly because the primary cost was sending verification texts to users.
App Store. In a December blog post, WhatsApp claimed that million active users use the service each month, on August 24,, Koum announced on his Twitter account that WhatsApp had over million active users worldwide. Sequoia Capital received an approximate 50x return on its initial investment, employee stock was scheduled to vest over four years subsequent to closing. The transaction was the largest purchase of a company backed by venture capitalists to date, days after the announcement, WhatsApp users experienced a loss of service, leading to anger across social media.
Both devices run the Nokia S40 mobile operating system, there is no direct predecessor of the phones, though the closest to it is the Nokia X, which has similar features and a very similar user interface, as well as having better music capabilities.
The Nokia C3 is also a predecessor, also using similar features. The phones are successors to the Nokia X, as use the same bright colors. The device has uni-colored body rather than combination, the device is able to capture pictures at a resolution of x pixels with its 2. The results are good for day to day usage like instant sharing or updating profiles at social networks as the phone supports apps like Facebook and Twitter.
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