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$15.00
Size
Image Size
Product Details
Our spiral notebooks are 6" x 8" in size and include 120 pages which are lined on both sides. The artwork is printed on the front cover which is made of thick paper stock, and the back cover is medium gray in color. The inside of the back cover includes a pocket for storing extra paper and pens.
Design Details
Leibniz may have been the first computer scientist and information theorist. The Step Reckoner (or Stepped Reckoner) was a digital mechanical... more
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2 - 3 business days
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Average Rating (4.71 Stars):
Ian Whitehouse
April 12th, 2024
Great.
Nikki McDonald
April 10th, 2024
My grand-daughter will LOVE having this picture of her pretty kitty on a lined notebook - perfect for the stories she's always writing.
Paul Cooney
April 10th, 2024
I am very pleased with the book with portrait of General Yermolov on cover.
Aleka Kahealani
March 27th, 2024
I love Liana's art, and having it in any capacity in my home only enhances the overall frequency! Grateful to add this journal to my collection!!
Daniel Garcia
March 26th, 2024
The item was a gift for a friend and she loves it
Dolores Nadwondy
March 25th, 2024
Love the colors a size.
Leibniz may have been the first computer scientist and information theorist. The Step Reckoner (or Stepped Reckoner) was a digital mechanical calculator invented by German mathematician Gottfried Wilhelm Leibniz around 1672 and completed in 1694. It was the first calculator that could perform all four arithmetic operations addition, subtraction, multiplication and division. Its intricate precision gear work, however, was somewhat beyond the fabrication technology of the time; mechanical problems, in addition to a design flaw in the carry mechanism, prevented the machines from working reliably. Despite the mechanical flaws of the Stepped Reckoner, it gave future calculator builders new possibilities. The operating mechanism, invented by Leibniz, called the stepped cylinder or Leibniz wheel, was used in many calculating machines for 200 years, and into the 1970s with the Curta hand calculator.
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All spiral notebooks ship from our production facility within 2 - 3 business days of your order.
$15.00
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