Samuel Fedida

Viewdata Graphics used in the experimental phone directory of Post Office Telecommunications in 1977.
The image is a graphical representation of the Post Office/British Telecom Research laboratories (Adastral Park) in Suffolk, England.

Samuel Fedida (1918–2007) was a British telecommunication engineer responsible at Prestel for the development of Viewdata.

Fedida had the idea for Viewdata in 1968 after reading a publication with the title The Computer as Communications Device. The first prototype became operational in 1974. In 1977 the system was introduced in the United Kingdom.