Word: eniac
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...ENIAC was the technological wonder of its day. Programming the machine could take as long as two days as "coders" armed with detailed instructions fanned out among the panels, setting dials and plugging in patch cords in an arrangement that resembled an old-fashioned telephone switchboard. Data were fed into ENIAC in the form of IBM punch cards; a million cards were required for the monster's first assignment, a top-secret numerical simulation for the still untested hydrogen bomb. Every time a tube burned out, which happened twice a day at the start, a technician had to rummage among...
...every measure, ENIAC was an imposing machine. It weighed 30 tons and occupied a space as large as a boxcar. Its 40 modular memory and processing units, each housed in a 9-ft.-high black metal cabinet and bristling with dials, wires and indicator lights, filled a room the size of a small gymnasium. Its 18,000 vacuum tubes radiated so much heat that industrial cooling fans were needed to keep its circuitry from melting down...
Other computing machines of that era solved mathematical problems in one of two ways. Either they estimated the solutions, using mechanical analog devices like slide rules and differential gears, or they computed them digitally, using the on-off action of slow-moving electromagnetic telephone switches. ENIAC, by contrast, was the first digital computer both to store and to process information with vacuum tubes; as a result, it was able to perform calculations 1,000 times as fast as its electromechanical predecessors. "I was convinced that you could produce great speeds electronically if you put your mind to it," says Eckert...
Anticipating the gung-ho spirit of their spiritual successors in Silicon Valley, the ENIAC team members worked with demonic intensity. "Eckert was completely devoted to the machine," recalls John Grist Brainerd, the project director. "He would work on it day and night, and worry, worry." Two cots were installed on the ground floor of the Moore School so that the exhausted computer scientists could rest near their cherished machine. "When it finally turned on, everyone was elated," recalls Kay Mauchly. "It seemed like every day was a happy...
Those happy days soon came to an end. A month after the ENIAC's public unveiling, Eckert and Mauchly resigned rather than turn their patent rights over to the university. Five years later they developed the first commercial computer, UNIVAC 1, but business reversals forced them to sell their fledgling computer company to Remington Rand. The final insult came in 1973. Seeking to invalidate Mauchly and Eckert's patent for "the" electronic computer, Honeywell convinced a federal judge that Mauchly had based his ideas for ENIAC on the work of a computer pioneer named John Atanasoff. The patent was dismissed...