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Semaphore Telegraph
In France, Claude Chappe establishes the first long-distance semaphore telegraph line through a series of towers in line of sight of each other. Using a telescope, they would read a message, then pass it to the next tower. -
Telegraph Line
Joseph Henry built an electric device and successfully sent a signal over a short distance, approximately 1.5 miles. This was not used because of the limited range. -
Telegraph Machine
Samuel Morse builds the first long-distance electric telegraph line. Additionally, he contributed to the invention of the single-wire telegraph which led to the commercial use of telegraphy. He also designed the Morse Code. -
Landline Telephone
Alexander Graham Bell and Thomas A. Watson exhibit an electric telephone in Boston. -
Computer
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Radio Broadcast
Radio station KDKA based in Pittsburgh began the first broadcast. -
Television
Full-scale commercial television is first broadcast. -
Fax Machine
First modern fax machine commercially available (Long Distance Xerography) -
Email
First email sent. -
Mobile Phone
The first cell phone was the Motorola DynaTAC 8000X. -
Period: to
Social Networking
2003 – Skype
2004 – Facebook
2005 – YouTube
2005 – Reddit
2006 – Twitter
2007 – iPhone
2010 – Instagram
2011 – Snapchat
2015 – Discord