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MARQUAND MACHINE Allan Marquand, a Princeton professor, had developed a machine that solved very simple logic problems. But in his correspondence with the philosopher, Charles S. Pierce, he showed deep insight into what machines could be. In commenting on Marquand's machine, Pierce suggested that a system of batteries and switches could be hooked up to solve very difficult problems in formal logic. This would include most of the theorems of algebra and geometry. This is remarkably like the idea basic to the modern computer  all arithmetic operations have electrical counterparts.
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1  courtesy: part of text Computermuseum of America 
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