File:Leibniz Stepped Reckoner drawing.png

From Wikimedia Commons, the free media repository
Jump to navigation Jump to search

Leibniz_Stepped_Reckoner_drawing.png (600 × 440 pixels, file size: 123 KB, MIME type: image/png)

Captions

Captions

Add a one-line explanation of what this file represents

Summary

[edit]
Description
English: Drawing of the 'Stepped Reckoner', a mechanical calculator invented by German mathematician Gottfried Wilhelm Leibniz in 1674 and completed in 1694. About 67 cm (23 inches) long. In the upper view the top plate is removed to show the works. This was the first calculating machine able to do all four arithmetic operations: addition, subtraction, multiplication, and division.

The machine consists of two parts, the 12 digit accumulator section (pars immobilis) in back and the 8 digit input section in front. The input section can be moved using the crank (K) and worm gear to align different digits of the two sections. The 8 dials (rotae minusculae) on the input section are used to set the operand number into the machine. The telephone-like dial (rota majuscula) is used to set the multiplier. Turning the crank (magna rota) on the front performs the calculation. The result appears in the 12 windows in the accumulator section.

Probably only two machines were built; the only surviving one is a 16 digit version in the National Library of Lower Saxony (Niedersächsische Landesbibliothek) in Hannover. For more information see James Redin (2007) A Brief History of Calculators Part 1: The Age of the Polymaths.
Date
Source Downloaded 2008-1-16 from Leibniz's Calculator, Rechnerlexikon which states it is from Hermann Julius Meyer, ed. (1893-1897) Meyers Konversationslexicon, 5th Ed., Bibliographischen Institut, Leipzig, Germany.
Author Hermann Julius Meyer
Permission
(Reusing this file)		 Public domain - Meyer died in 1909

Licensing

[edit]
Public domain

This work is in the public domain in its country of origin and other countries and areas where the copyright term is the author's life plus 70 years or fewer.

You must also include a United States public domain tag to indicate why this work is in the public domain in the United States.
 Note that a few countries have copyright terms longer than 70 years: Mexico has 100 years, Jamaica has 95 years, Colombia has 80 years, and Guatemala and Samoa have 75 years. This image may not be in the public domain in these countries, which moreover do not implement the rule of the shorter term. Honduras has a general copyright term of 75 years, but it does implement the rule of the shorter term. Copyright may extend on works created by French who died for France in World War II (more information), Russians who served in the Eastern Front of World War II (known as the Great Patriotic War in Russia) and posthumously rehabilitated victims of Soviet repressions (more information).
This file has been identified as being free of known restrictions under copyright law, including all related and neighboring rights.

File history

Click on a date/time to view the file as it appeared at that time.

Date/TimeThumbnailDimensionsUserComment
current11:18, 19 January 2008Thumbnail for version as of 11:18, 19 January 2008600 × 440 (123 KB)Chetvorno (talk | contribs){{Information |Description=Drawing of the ''Staffelwalze'' (English: 'Stepped Reckoner'), a mechanical calculator invented by German mathematician Gottfried von Leibniz in 1674 and complet

You cannot overwrite this file.

There are no pages that use this file.

File usage on other wikis

The following other wikis use this file:

Retrieved from "https://commons.wikimedia.org/w/index.php?title=File:Leibniz_Stepped_Reckoner_drawing.png&oldid=460373040"