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AT simbol 
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Escuro
AT simbol
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well known signal ,many people think was created for the internet, is in
fact very old. In the Midle Ages book were copyed by copyists one by one, and beacuse of it were very rare and expensive. To save ink and paper that were realy high cost, copists began to use a series of short forms in their writtings. They started usin abbreviatons like & (called "ampersand") junction of the leters from Latin "ET" (and). This symbol is used today has commercial "and" (see Johnson & Jonhson). From the junction of the leters in "AD" (in,on at) from Latin came the simbol @" . With the arrival of the Press and the end of copists the simbols "&" and "@" continued to be used in accounting books. In accounting registers 10 @ £ 3 - meant " 10 units at 3 pounds each". In the 19th century the spanish ports used to copy Britsh accounting practises. Spanish accountants didn't know the meaning gave to "@" by the British and a mistake went on because of two coincidences. 1- a normal weight unit in Europe was arroba (± 15 Kg.) which initial "a" reminds the symbol. 2- The shiploads came usualy in packs of one "arroba" (pound in English) and spanish interpretred that 10 @ £ 3 as 10 arrobas costing 3 pounds each. Arroba comes from arabic ar-ruba meaning a quarter part. One arroba (about 15 Kg) was the quarter of a weighting measure called "quintal" (58,75 Kg). Typing machines produced since 1874 kept the simbols "@" and "£" in the keyboard that was latter brought to computers. In 1972, developing the fist email software, Roy Tomlinson used the sign "@" (in,on at) between the user's and the provider's name. So, when you type "username@yahoo" you are saying "username AT yahoo", right? AT is a preposition in English and here you have .more about prepositions. Have you ever imagined that behind something so simple you had so much History? That's it. Living and learning. |
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Este
conhecidíssimo sinal que muita gente pensa que nasceu com a internet, é
na verdade muito antigo. Veja: Na idade média os livros eram copiados manualmente por copistas, e por isso eram muito raros e caros. A fim de economizar tinta e papel, que eram caríssimos e preciosos, os copistas começaram a usar uma série de abreviações em seus escritos. Assim surgiram abreviações como & (em inglês "ampersand" - veja a página Sinais Gráficos) resultado do entrelaçamento das duas letras de "et" (e) latino. Esse símbolo é hoje usado como "E" comercial (veja Johnson & Johnson = Johnson E Johnson, por exemplo). Do entrelaçamento de duas letras de "ad" (em) latino nasceu o símbolo "@" . ,Significa "em" ou "casa de" entre outros. Com a chegada da imprensa e o fim dos copistas os símbolos "&" e "@" continuaram a ser usados em livros de contabilidade. Em registros contábeis 10 @ £ 3 - significava "10 unidades ao preço de 3 Libras cada". No século XIX os portos de Espanha costumavam imitar as práticas contábeis inglesas. Os espanhóis desconheciam o significado atribuído pelos ingleses ao "@" e um engano se perpetuou por duas coincidências: 1- a unidade de peso comum na Espanha era a
arroba (± 15 Kg.) cujo "a" inicial lembra a forma do símbolo.
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