The first calculations were done on April 1, 1954 and BESK handled weather data for Carl-Gustaf Rossby and the Swedish Meteorological and Hydrological Institute, statistics for the telecommunications service provider Televerket, wing profiles for the attack aircraft Saab Lansen, and road profiles for the road authority Vägverket.
It was developed in the beginning of the 1980s by the Swedish Televerket Radio.
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From 1988 the development took place in Eritel, a joint-venture between Ericsson and Televerket, later on as an Ericsson subsidiary.
The project was carried out in close collaboration between Alcatel and the public telephone company Televerket, with Nyfors providing the on-board optical fiber recoaters.
He was a member of the council of the Norwegian Agency for Development Cooperation from 1962 to 1972, board chairman of Televerket from 1969 to 1973 and of the Norwegian National Opera from 1969 to 1975.
Engset received a M.Sc. in physics and mathematics (1894) at University of Oslo, after which he worked at Televerket as office worker, traffic analyst and later at age 65 director general (1921-22 (acting), 1930–35).
His posts since that time have included chairman of Föreningsbanken and Televerket.