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Rediscovering WWII's female 'computers':
Jean Jennings Bartik was one of the women computers. In 1945, she was a recent graduate of Northwest Missouri State Teachers College, the school's one math major. She lived on her parents' farm, refusing the teaching jobs her father suggested, avoiding talk of marrying a farmer and having babies. Bartik was waiting on a job with the military.

When a telegram arrived asking her to come right away, she took a late-night train and began new career in Philadelphia.

She learned the hand calculations, and saw the clunky old analyzer used to speed up the process. Its accuracy depended on the work of her colleagues, and a mechanic who serviced its belts and gears.

The war ended in 1945, but within a couple months of arriving in Philadelphia, Bartik was hired to work on a related project -- an electronic computer that could do calculations faster than any man or woman. The Electronic Numerical Integrator and Computer, created by Penn scientists John Mauchly and J. Presper Eckert Jr., weighed more than 30 tons and contained about 18,000 vacuum tubes. It recognized numbers, added, subtracted, multiplied, divided and a few other basic functions.

Men had built the machine, but Bartik and her colleagues debugged every vacuum tube and learned how to make it work, she said. Early on, they demonstrated to the military brass how the computer worked, with the programmers setting the process into motion and showing how it produced an answer. They handed out its punch cards as souvenirs. They'd taught the massive machine do math that would've taken hours by hand.

But none of the women programmers was invited to the celebratory dinner that followed. Later, the heard they were thought of as models, placed there to show off the machine.

Other than a shared certificate of commendation from the military, the programmers and their hand-calculating counterparts got no recognition.

"We thought that was terrible," said Bartik, now 86.
You can find out more about Top Secret Rosies, the documentary made about Bartik and her compatriots, here.

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