P145 BEEBFAX 122 Thu 31 Dec --:--/--                                   Clive Marles Sinclair (born 30 July  1940) is an English entrepreneur and  inventor.  After spending several years as  assistant editor of Practical Wireless  and Instrument Practice, Sinclair  founded Sinclair Radionics in 1961,  where he produced the first slim-line  electronic pocket calculator in 1972  (the Sinclair Executive).    News Headlines 1O1  Contents 100   Next       Prev       Home        End