The Ducati singles were single cylinder motorcycles, made by Ducati from 1950 to 1974. Chief Engineer Fabio Taglioni

Fabio Taglioni

Fabio Taglioni was an Italian engineer.Born in Lugo di Romagna, he was chief designer and technical director of Ducati from 1954 until 1989. His desmodromic L-twin design is still used in all current Ducati motorcycle engines...

 developed a desmodromic valve system in these years, a system that opens and closes the valves using the camshaft, without the need for valve springs. This valve system has become a trademark feature of Ducati motorcycles.
In 1926, the brothers Adriano and Marcello Ducati founded Societa Scientifica Radio Brevetti Ducati, a company in Bologna

Bologna

Bologna is the capital city of Emilia-Romagna, in the Po Valley of Northern Italy. The city lies between the Po River and the Apennine Mountains, more specifically, between the Reno River and the Savena River. Bologna is a lively and cosmopolitan Italian college city, with spectacular history,...

 producing tubes

Vacuum tube

In electronics, a vacuum tube, electron tube , or thermionic valve , reduced to simply "tube" or "valve" in everyday parlance, is a device that relies on the flow of electric current through a vacuum...

, condensers and other radio components.