NATS 1700 Lecture Notes - Cigarette Pack, Root Mean Square, Socalled

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The world of calculators: from o ce equip- ment to pocket gadgets. Informal and unedited notes, not for distribution. (c) z. stachniak, 2011. Note: in the case when i was unable to nd the primary source of an image or determine whether or not an image is copyrighted, i have speci ed the source as. I will provide full information about images and/or obtain reproduc- tion rights when such information is available to me. In the 17th, 18th, and the rst half of the 19th century the dominating and prevailing calculating aids were: pen-and-paper methods (algorithms), abacus (in its variety of forms), mathematical tables. The industrial revolution brought new manufacturing methods and with them the ability to produce good quality precision instruments and mechan- ical devices, such as calculators, in large quantities. 19th century, an increasing number of calculators were o ered commercially but their use was not widely spread.

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