of computers. An informal system of classifying computer systems as advances have been made in electronic technology and, latterly, in software. Since the design of digital computers has been a continuous process more than five decades – by a wide variety of people in different countries, faced with different problems – it is difficult and not very profitable to try and establish where ‘generations’ start and finish. See first generation
, second generation
, third generation
, fourth generation
, fifth generation
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