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Enabling technology for mobile phones was first developed in the 1940s but it was not until the mid-1980s that they became widely available. By 2011, it was estimated in Britain that more calls were made using mobile phones than wired devices. [ 1] The history of mobile phones covers mobile communication devices that connect wirelessly to the ...
Henrietta Lacks (born Loretta Pleasant; August 1, 1920 – October 4, 1951) [ 1 ] was an African-American woman [ 4 ] whose cancer cells are the source of the HeLa cell line, the first immortalized human cell line [ A ] and one of the most important cell lines in medical research. An immortalized cell line reproduces indefinitely under specific ...
Hanyu Pinyin. zhōngxīng. ZTE Corporation is a Chinese partially state-owned technology company that specializes in telecommunication. Founded in 1985, ZTE is listed on both the Hong Kong and Shenzhen Stock Exchanges . ZTE's core business is wireless, exchange, optical transmission, data telecommunications gear, telecommunications software ...
The iPhone is a smartphone produced by Apple that uses Apple's own iOS mobile operating system. The first-generation iPhone was announced by then–Apple CEO Steve Jobs on January 9, 2007. Since then, Apple has annually released new iPhone models and iOS updates. As of November 1, 2018, more than 2.2 billion iPhones had been sold.
Telefónica, S.A. ( Spanish pronunciation: [teleˈfonika]) is a Spanish multinational telecommunications company with registered office and headquarters located in two different places, both in Madrid, Spain. [ 3] It is one of the largest telephone operators and mobile network providers in the world.
Carl Benda (30 December 1857 Berlin – 24 May 1932 Turin) was one of the first microbiologists to use a microscope in studying the internal structure of cells. In an 1898 experiment using crystal violet as a specific stain, Benda first became aware of the existence of hundreds of these tiny bodies in the cytoplasm of eukaryotic cells and assumed that they reinforced the cell structure.
Human history. The history of writing traces the development of writing systems [ 1] and how their use transformed and was transformed by different societies. The use of writing prefigures various social and psychological consequences associated with literacy and literary culture. With each historical invention of writing, true writing systems ...
Word 2.0 for DOS was released in 1985 and featured Extended Graphics Adapter (EGA) support. Word 3.0 for DOS was released in 1986. Word 4.0 for DOS was released in 1987 and added support for revision marks (equivalent to the Track Changes feature in more recent Word versions), search/replace by style and macros stored as keystroke sequences. [8]