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| | Prestel - Wikipedia, the free encyclopedia (Site not responding. Last check: 2007-10-11) |
 | | In common with the Ceefax and ORACLE services provided by the BBC and ITV television companies, the system used a modified television to display information in a non-scrolling window of 40x24 text characters, with some simple graphics, conforming to the 1974 CEPT1 standard. |
 | | Unlike the limited data available on Ceefax and Oracle, Prestel offered an extensive range of information, which was held on a number of mirrored computers throughout the country. |
 | | However the former services were provided free, encoded with the television transmissions, while Prestel data was transmitted via telephone lines to a set-top box terminal, and while this enabled interactive services and e-mail to be provided, it also involved purchasing the terminal, and paying both a monthly subscription and the cost of local telephone calls. |
| www.encyclopedia-online.info /Prestel (388 words) |
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