Abstract :
In less than 30 years computer-based products have invaded most of our lives. A quarter of a century ago the computer was a research tool, with a few monolithic multimillion pound (at today´s values) giants delivered to large companies and scientific establishments, in many cases purchased for prestige purposes. Today we find the computer in one form or another in pocket calculators, TV games, in the home, commerce, industry and scientific and military establishments
