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After the parenthesis representing the nostalgic entry on perforated cards, takes up the usual historical path. The previous entry in the series was devoted to discuss the Sort, this old friend of the computers, and it will continue forward, explaining how the series began to use PCs in the enterprise. In fact, an idea this article deals with aspects of the technological changes that occurred during the 80 years, of which perhaps the most prominent, interesting and most important was the subsequent adoption of the PC so do not expect a general summary journalistic style of Wikipedia.
