Bio
Anna Rosling Ronnlund
Anna Rosling Ronnlund is a co-founder in 2005, along with Hans Rosling and Ola Rosling of the Gapminder Foundation. Gapminder is a non-profit venture - a modern 'museum' on the Internet - promoting sustainable global development and achievement of the United Nations Millennium Development Goals.
The initial activity was to pursue the development of the Trendalyzer software. Trendalyzer sought to unveil the beauty of statistical time series by converting boring numbers into enjoyable, animated and interactive graphics. The current version of Trendalyzer is available since March 2006 as Gapminder World, a web-service displaying time series of development statistics for all countries.
In March 2007, Google acquired Trendalyzer from the Gapminder Foundation and the team of developers who formerly worked for Gapminder joined Google in California in April 2007.
Encyclopædia Britannica Article
- data transmission
Sending and receiving data via cables (e.g., telephone lines or fibre optics) or wireless relay systems. Because ordinary telephone circuits pass signals that fall within the frequency range of voice communication (about 3003,500 hertz), the high frequencies associated with data transmission suffer a loss of amplitude and transmission speed. Data signals must therefore be translated into a format compatible with the signals used in telephone lines. Digital computers use a modem to transform outgoing digital electronic data; a similar system at the receiving end translates the incoming signal back to the original electronic data. Specialized data-transmission links carry signals at frequencies higher than those used by the public telephone network. See also broadband technology; cable modem; DSL; ISDN; fax; radio; teletype; T1; wireless communications.
- data transmission on britannica.com
© 2010 Encyclopædia Britannica, Inc.