History of Twitter

Twitter is the brainchild of a programmers who worked at the podcasting company Odeo Inc. in San Francisco. The founders are Jack Dorsey (@Jack), Evan Williams (@Ev) and Biz Stone (@Biz).

They were looking for a way to send text on their cellphones and a way to reinvent a dying company. On March 21, 2006, @Jack sent the first tweet: "just setting up my twttr." And thus a communications revolution was born, one renown for brevity and bad spelling. Dom Sagolla (@Dom), in tweet 38, typed these prescient words: "Oh, this is going to be addictive."

THAT NAME

The name Twitter was inspired by Flickr, a photo-sharing service. Other names considered: FriendStalker and Dodgeball. The dictionary definition of twitter is "a short burst of inconsequential information."A perfect name, said @Jack because "that's exactly what the product was."

TWITTER TODAY

 Almost 200 million users worldwide. About 460,000 new Twitter accounts are opened daily. More than 140 million tweets are sent daily. That's one billion weekly. In 2008, Twitter had eight employees; today it has more than 400. And they're hiring (twitter.com/jobs)

 WHY 140 CHARACTERS?

At the heart of Twitter are small bursts of information called tweets. Each tweet is 140 characters in length, maximum. Initially, there was no limit to message length. When it went public, the 140 character limit was adopted. Why? Because 160 characters was the SMS carrier limit and the founders wanted to leave room for a username. Struggling with brevity? You can purchase 140 Characters: A Style Guide for the Short Form by @Dom.

HOW TWITTER MAKES MONEY

Twitter lists its revenues at a modest $150-million annually. It is a private company so the sources of revenue are unclear. Twitter also licenses its stream of tweets to Microsoft, Google and Yahoo. There are constant rumours that Twitter will be purchases by Facebook or Google. It could also go public like LinkedIn. Twitter is said to be worth more than $4.5-billion. The value comes from its potential to exploit its base of hundreds of millions of users. Twitter could sell traditional ads (not likely) and to start charging for premium accounts that push business to their sites (very likely).

HOW TWITTER HAS CHANGED THE MEDIA

Twitter is not just your friends telling you what they ate for breakfast. Increasingly, news stories that arise - a tsunami, a plane crash, the score of a hockey game, the latest Charlie Sheen gossip - arrive in tweets from people we follow on Twitter. This allows everyone to essentially create their own newspaper or newscast, and to do so instantaneously.

Charle Chaplin

There are many famous people in this world.  People can be famous for Kriamy reasons.  First a person can excel in one and become famous Also he/sh invent something and become famous However there are some practical people arround us who showr us that we can do many thi ngs.  that one can become prove us in area but also in man different fields successful not only one y Sir Charles Spencer Chaplin or con mmonly known as English actor,  comedian and filmmaker,  who became world famous,  has proved this very fact.  Recently.  I read about in a newspaper.  This great person once said You'll him shows how never find a rainbow if you're down This statement optimistic looking he is Charles Spencer Chaplin London,  in was born father's the United Kingdom.  is parents were singers an death,  his family had to racc c on 16th April 1889 in walworth actors.  After his strugglcd many enges.  As a result his mother financially.  Hence Charlie's childhood can be described as one with Poverty and hardships.  However his mother earncd the living by performing on stage.  The situation became worse after the illness of Charlic's mother,  Hannah Chaplin.  He had to start work at the age of nine.  All what he inherited from both his parents werc put into practice.  Small Charlie's will power and talent made him a stage actor and comedian.  At the age of 19 he moved to the United States and joined Fred Karno Company.  Charlie could win the hearts of the audience very soon.  In 1913,  he entered the cinema world

History of mobile phones

When were mobile phones first invented?

Mobile phones, particularly the smartphones that have become our inseparable companions today, are relatively new.

However, the history of mobile phones goes back to 1908 when a US Patent was issued in Kentucky for a wireless telephone.

Mobile phones were invented as early as the 1940s when engineers working at AT&T developed cells for mobile phone base stations.

The very first mobile phoneswere not really mobile phones at all. They were two-way radios that allowed people like taxi drivers and the emergency services to communicate.

Instead of relying on base stations with separate cells (and the signal being passed from one cell to another), the first mobile phone networks involved one very powerful base station covering a much wider area.

Motorola, on 3 April 1973 were first company to mass produce the the first handheld mobile phone.

These early mobile phones are often referred to as 0G mobile phones, or Zero Generationmobile phones. Most phones today rely on 3G or 4G mobile technology.

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The development of mobile phone technology

The first mobile phone invented for practical use was by a Motorola employee called Martin Cooper who is widely considered to be a key player in the history of mobile phones.

Handsets that could be used in a vehicle had been developed prior to Martin Cooper’s phone, but his was the first usable truly portable mobile telephone.

Cooper made mobile phone history in April 1973 when he made the first ever call on a handheld mobile phone.

Landmarks in early mobile phone history

• Japan became the first country to have a city-wide commercial cellular mobile phone network in 1979.
• The Nordic Mobile Telephone (NMT) system launched in Denmark, Norway, Sweden and Finland in 1981.
• The next major step in mobile phone history was in the mid-eighties with the First Generation (1G) fully automatic cellular networks were introduced.
• The first ever mobile phone to be approved by the FCC (Federal Communications Commission) in the USA was the Motorola DynaTac in 1983.

Modern mobiles

Mobile telephony developed in leaps and bounds over the next decade, particularly with the arrival of handover technology.

This allowed users to keep their connections as they travelled between base stations – so as a user walked from one mobile phone mast to another, the connection and conversation would not drop or be interrupted.

The birth of the Second Generation (2G) mobile phones was in Finland in 1993. It was also the year that the first SMS text messages were sent and that data services began to appear on mobile phones.

Mobiles that we use today are 3G mobiles, or Third Generation mobiles, or even more advanced 4G handsets.

3G launched in 2001 and allowed operators to offer a huge range of advanced services such as video calling and HSPAdata transmission.

4G became commerically available in the UK in late 2012 and offers super fast connections and similarly speedy downloads.

The history of america

American History

The history of the United States is vast and complex, but can be broken down into moments and time periods that divided, unified, and changed the United States into the country it is today:

1700-1799

• The American Revolution (sometimes referred to as the American War of Independence or the Revolutionary War) was a conflict which lasted from 1775-1783 and allowed the original thirteen colonies to remain independent from Great Britain.
• American politician and soldier George Washington became the first President of the United States in 1789, serving two terms.
• Beginning in Great Britain in the late 1790s, the Industrial Revolution eventually made its way to the United States and changed the focus of our economy and the way we manufacture products.

1800-1899

• In 1803, President Thomas Jefferson agreed to the Louisiana Purchase, successfully adding 530 million acres of land to the United States. The area was purchased from France for $15 million. The following year, President Jefferson assigned Meriwether Lewis (who asked for help from William Clark) to head west and explore the newly purchased land. It took about a year and a half for the duo to reach the west coast.
• The American Civil War divided the United States in two – the Northern States versus the Southern States. The outcome of the four year battle (1861-1865) kept the United States together as one whole nation and ended slavery.

1900-1999

• On December 17, 1903, brothers Wilbur and Orville Wright became the first people to maintain a controlled flight in a powered, heavier-than-air machine. The Wright Flyer only flew for 12 seconds for a distance of 120 feet, but their technology would change the modern world forever.
• On April 6, 1917, the United States entered World War I by declaring war on Germany.
• After nearly 100 years of protests, demonstrations, and sit-ins, women of the United States were officially granted the right to vote after the 19th Amendment was ratified on August 26, 1920.
• The worst economic crisis to happen in the United States occurred when the stock market crashed in October 1929 resulting in the Great Depression.  
• World War II officially begins in September 1939 after Germany invades Poland. The United States didn’t enter the war until after the Japanese attack on Pearl Harbor on December 7, 1941.
• On August 6 and August 9 1945, the United States dropped an atomic bomb on the Japanese cities of Hiroshima and Nagasaki, effectively ending World War II. 
• After World War II, an agreement was reached to divide Korea into two parts: a northern half to be controlled by the Soviet Union and a southern half to be controlled by the United States. The division was originally meant as a temporary solution, but the Soviet Union managed to block elections that were held to elect someone to unify to country. Instead, the Soviet Union sent North Korean troops across the 38th parallel leading to the three-year long (1950-1953) Korean War. 
• From 1954-1968, the African-American Civil Rights movement took place, especially in the Southern states. Fighting to put an end to racial segregation and discrimination, the movement resulted in the 1964 Civil Rights Act, the 1965 Voting Rights Act, and the 1968 Fair Housing Act.
• The Vietnam War was a nearly 20 year battle (November 1, 1955–April 30 1975) between North Vietnam and South Vietnam. North Vietnam won the war and Vietnam became a unified country.
• The Apollo 11 mission (July 16-24, 1969) allowed United States astronauts Neil Armstrong and Edwin “Buzz” Aldrin to become the first humans to walk on the moon’s surface.

2000-Present

• The terrorist attacks on September 11, 2001, changed the United States forever. Less than a month later (October 7, 2001) the United States began the War in Afghanistan, which is still happening today.
• On March 20, 2003, the United States invaded and occupied Iraq. The war lasted for more than eight years before it was officially declared over on December 18, 2011.
• In 2008, Barack Obama became the first African-American to be elected President of the United States.
• Operation Neptune Spear was carried out on May 2, 2011, resulting in the death of long-time al-Qaeda leader Osama bin Laden.

Library of Congress Resources

The Library of Congress has compiled a list of historic events for each day of the year, titled "This Day in History." The website is updated daily and visitors can view the previous day's history as well as whatever documents, pictures, or outside information is available for each historical event. 

The American History section of the Library of Congress is separated by time period or subject and offers an in-depth look into the history of the United States.