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From the September 2009 Scientific American Magazine | 15 comments

The Origin of Computing ( Preview )

The information age began with the realization that machines could emulate the power of minds

By Martin Campbell-Kelly   

 


Holly Lindem (photoillustration); Gene Burkhardt (styling)

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Key Concepts

  • The first “computers” were people—individuals and teams who would tediously compute sums by hand to fill in artillery tables.
  • Inspired by the work of a computing team in revolutionary France, Charles Babbage, a British mathematician, created the first mechanical device that could organize calculations.
  • The first modern computers arrived in the 1950s, as researchers created machines that could use the result of their calculations to alter their operating instructions.

In the standard story, the computer’s evolution has been brisk and short. It starts with the giant machines warehoused in World War II–era laboratories. Microchips shrink them onto desktops, Moore’s Law predicts how powerful they will become, and Microsoft capitalizes on the software. Eventually small, inexpensive devices appear that can trade stocks and beam video around the world. That is one way to approach the history of computing—the history of solid-state electronics in the past 60 years.

But computing existed long before the transistor. Ancient astronomers developed ways to predict the motion of the heavenly bodies. The Greeks deduced the shape and size of Earth. Taxes were summed; distances mapped. Always, though, computing was a human pursuit. It was arithmetic, a skill like reading or writing that helped a person make sense of the world.

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