Download A to Z of Computer Scientists by Harry Henderson PDF

By Harry Henderson

This accomplished A-to-Z biographical dictionary explores the various team of inventors, scientists, marketers, and visionaries within the laptop technology box. The state of the art, modern entries and data at the desktop supply a glimpse into not just their force but additionally their demanding situations in making a new form of enterprise and a brand new type of tradition.

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His paper “On a General Method in Analysis” was rejected at first by the prestigious Royal Society, perhaps because Boole did not have a formal university degree. However, Boole’s cause was supported by some top mathematicians, and the paper was eventually not only published but awarded a gold medal. By 1849, Boole’s work had made such an impression on his colleagues that all questions about his background were dropped, and he was appointed professor of mathematics at the newly founded Queen’s College in Cork, Ireland.

The PDP had a data word length of 18 bits, rather than the 36 bits used by most mainframes. This meant that it could not easily handle the large numbers used in some scientific calculations. The machine also did not have built-in 20 Bell, Chester Gordon floating-point circuitry for handling decimal numbers, so such calculations would be slower than with mainframes. But DEC was betting that there was a market for more modest computing capability at a much lower price, and the market proved them right: Between 1965 and 1980, DEC sold 50,000 of the PDP-1 and its successors.

The feeling was: Why change? ” In 1990, however, Bezos was working at the D. E. Shaw Company and his employer asked him to research the commercial potential of the Internet, which was starting to grow (even though the World Wide Web would not reach most consumers for another five years). Bezos ranked the top 20 possible products for Internet sales. They included computer software, office supplies, clothing, music—and books. Analyzing the publishing industry, Bezos identified ways in which he believed it was inefficient.

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