There has been computer revolution except in productivity Sector according to Professor M.H.T. Tenraa, Professor of Economics, Tilburg University, Netherland. He emphasised there is a greater need of computer use in productivity areas as well said Prof. Tenraa speaking in a Seminar on "Engines of Growth in the US Economy " held at Indian Institute of Finance today.

Prof. Tenraa started his lecture by emphasising the Solow's Macro Conceept of Productivity. He converted this concept to the sectoral productivity. There after he spoke on R & D and its inter-sectoral multiple effect of R & D into focus. The later concept has been neglected in the literature so far. During the Course of his lecture he he presented the estimate of productivity of growth of 68 sectors of US Economy form 1957 to 1987. His research shows that the computer & electronic equipments have gained the most by the household sector has grown the least . His first finding is in contradiction to solow's concepts that computer sector does not show any productivity growth.

While thanking Prof. Tebraa, Prof. J.D.Agarwal Chairman & Director, Indian Institute of Finance said that the two world wars end efficient use of factor endowments such as labour, Captial R & D effort in US Economy beside other factors acted as engines of growth in US Economy.

He reiterated that in the last 50 years US Economy has attracted effecient human resources from all over the world and used them nost effeciently.