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How were the tasks the computers performed done before computer invented?

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2005-09-15 00:22:47
2005-09-15 00:22:47

Basically the task were performed in three ways. Either manually which obviously took forever. In Asia, the abacus ruled. In trained hands it was (and still is) quick and accurate. And then there was the slide rule. My first semester as a math/science major I had to take a full semester class in the use of the slip stick. You could tell the math and engineering majors on campus by the slide rule we all had hanging in holsters on our belts.

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