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Telegram offers end-to-end encryption in voice and video calls, [10] and in optional private chats, which Telegram calls Secret Chats. Telegram also has social networking features, allowing users to post stories , create large public groups with up to 200,000 members, or share one-way updates to unlimited audiences in so-called channels.
Western Union telegram (1930) Western Union telegram sent to President Dwight Eisenhower wishing him a speedy recovery from his heart attack on Sept 26, 1955. A telegram service is a company or public entity that delivers telegraphed messages directly to the recipient. Telegram services were not inaugurated until electric telegraphy became ...
Samuel Finley Breese Morse (April 27, 1791 – April 2, 1872) was an American inventor and painter. After establishing his reputation as a portrait painter, Morse, in his middle age, contributed to the invention of a single-wire telegraph system based on European telegraphs.
Pavel Valeryevich Durov [b] (Russian: Павел Валерьевич Дуров; born 10 October 1984) is a Russian technology entrepreneur best known as the founder and chief executive officer (CEO) of Telegram, a messaging platform launched in 2013.
Instagram, a photo/video sharing and social media service, launches. [49] 2010 Launch Path, a social networking-enabled photo sharing and messaging service for mobile devices, launches. [50] 2010 Launch Quora, a question-and-answer platform, launches. [51] 2011 Launch Snapchat, a photo/video sharing and social media service, launches. [52] 2011
16-18 September 1845: Orrin S. Wood builds a short telegraph line of about one mile from Utica, New York to the city fairgrounds (the site of that year's New York State Fair), for public demonstration. [6] [7] September 1845: Henry O'Reilly commences building line intended to extend from Philadelphia to St. Louis.
A telegram is a written or printed telegraph message. Telegram also commonly refers to: Telegram (software), an instant messenger service also known as Telegram ...
After 1905 new types of radiotelegraph transmitters were invented which transmitted code using a new modulation method: continuous wave (CW) [35] (designated by the International Telecommunication Union as emission type A1A). [36] As long as the telegraph key was pressed, the transmitter produced a continuous sinusoidal wave of constant ...