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Period: 150 BCE to
Smoke signal
Western Zhou Dynasty The smoke signal is one of the oldest forms of long-distance communication. It is a form of visual communication used over a long distance. -
Period: to
Optical telegraph
Claude Chappe An optical telegraph is a line of stations, typically towers, for the purpose of conveying textual information by means of visual signals. -
Period: to 1866 BCE
Electrical Telegraph
Francisco Salva. It used the deflection of needles to represent messages and started operating over twenty-one kilometres (thirteen miles) of the Great Western Railway on 9 April 1839. -
Period: to
Telephone
Alexander Graham Bell Telephone technology grew quickly after the first commercial services emerged, with inter-city lines being built and telephone exchanges in every major city of the United States by the mid-1880s. -
Period: to
Video-telephony
John Louie Baird -
Period: to
Radio
Heinrich Hertz. Radio is the technology of signaling and communicating using radio waves. -
Period: to
Television
Philo Farnsworth Television (TV), sometimes shortened to tele or telly, is a telecommunication medium used for transmitting moving images in monochrome (black and white), or in colour, and in two or three dimensions and sound. -
Period: to
Digital telephone technology
J.McCreary The rapid development and wide adoption of pulse-code modulation (PCM) digital telephony was enabled by metal–oxide–semiconductor (MOS) technology. -
Period: to
Wireless revolution
The wireless revolution began in the 1990s,[91][92][93] with the advent of digital wireless networks leading to a social revolution, and a paradigm shift from wired to wireless technology -
Period: to
iPhone
Steve Jobs The user interface is built around the device's multi-touch screen, including a virtual keyboard -
Period: to
Chip
Chip will be in our body so we can call and do other things