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3200 BCE
INVENTION OF WRITING
About 3,200 BC writing was invented in Iraq and Egypt. Other civilizations in central America like the Mayans also invented systems of writing. -
1440
PRINTING PRESS
In the mid-15th century Johannes Gutenberg invented the printing press, which made books much cheaper and allowed newspapers to be invented. -
TELEGRAPH
The telegraph was invented in 1837. A cable was laid across the Channel in 1850 and after 1866 it was possible to send messages across the Atlantic. -
PENNY POST
Then in 1840 Rowland Hill invented the Penny Post, is any one of several postal systems in which normal letters could be sent for one penny. Five such schemes existed in the United Kingdom while the United States initiated at least three such simple fixed rate postal arrangements. -
FAX MACHINE
The first fax machine was invented in 1843. -
TELEPHONE
Alexander Graham Bell, invented the telephone in 1876. The telephone transmitted sound in a way that was similar to the telegraph. This method used vibrations and circuits to send electrical pulses, but was missing key features. Bell found that this method produced a sound through intermittent currents, but in order for the telephone to work a fluctuating current reproduced sounds the best -
MICROPHONE
The first microphone was invented as a telephone transmitter by Alexander Graham Bell in 1876. It was a liquid device that was not very practical. In 1886, Thomas Alva Edison invented the first practical carbon microphone. -
FIRST TELEPHONE LINE
The first telephone line from Paris to Brussels was established in 1887. The first transatlantic telephone line opened in 1927. -
INVENTION OT THE RADIO
In 1901 Marconi sent a radio message across the Atlantic. The idea that the wires needed for electrical telegraphy could be eliminated, creating a wireless telegraph, had been around for a while before radio-based communication. Inventors attempted to build systems based on electric conduction, electromagnetic induction, or on their own theoretical ideas. -
HEADPHONES
Engineer Nathaniel Baldwin invented the first pair of audio headphones resembling modern day pairs at his kitchen table in 1910. The Navy ordered 100 pairs, not knowing that Baldwin was making them by hand. -
TELEVISION
Television was invented in 1925 by John Logie Baird and the BBC began regular, high definition broadcasting in 1936. TV was suspended in Britain during World War II but it began again in 1946. -
COMPUTER
In 1937 the first electronic digital computer was built by Dr. John V. Atanasoff and Clifford Berry. It was called the Atanasoff-Berry Computer (ABC).The computer as we know it today had its beginning with a 19th century English mathematics professor name Charles Babbage.
He designed the Analytical Engine and it was this design that the basic framework of the computers of today are based on. -
PRINTER
The history of computer printers began in 1938 when Seattle inventor Chester Carlson invented a dry printing process called electrophotography—commonly called a Xerox— which was to be the foundation technology for decades of laser printers to come. -
Period: to
FIRST E-MAIL
Many US universities were part of the ARPANET (created in the late 1960s), which aimed at software portability between its systems. In 1971 the first ARPANET network email was sent, introducing the now-familiar address syntax with the '@' symbol designating the user's system address. -
TELEPHONE
The first smartphone, created by IBM, was invented in 1992 and released for purchase in 1994. The exponential scaling and miniaturization of MOSFETs (MOS transistors) down to sub-micron levels during the 1990s–2000s (as predicted by Moore's law) made it possible to build portable smart devices such as smartphones, as well as enabling the transition from analog to faster digital wireless mobile networks -
FLAT SCREEN
In 1997, Sharp and Sony introduced the first large flat screen TV. It was created using the PALC technology and measured 42 inches, a record size at the time. This first model sold for more than $15,000, making it well out of reach for most Americans. -
GOOGLE
Google was founded in September 1998 by Larry Page and Sergey Brin while they were Ph.D. students at Stanford University in California. Together they own about 14 percent of its shares and control 56 percent of the stockholder voting power through supervoting stock. -
YOUTUBE
YouTube first launched in 2005 and has now become one of the most visited websites in the history of the internet. -
TWITTER
Twitter was created by Jack Dorsey, Noah Glass, Biz Stone, and Evan Williams in March 2006 and launched in July of that year. By 2012, more than 100 million users posted 340 million tweets a day, and the service handled an average of 1.6 billion search queries per day.
