Jump to content

File:Demonstration model of Babbage’s Difference Engine No 1, 19th century. (9660573663).jpg

Page contents not supported in other languages.
This is a file from the Wikimedia Commons
From Wikipedia, the free encyclopedia

Original file (878 × 840 pixels, file size: 463 KB, MIME type: image/jpeg)

Summary

Description This model of Difference Engine No 1 was built by Henry Prevost Babbage (1824-1918) from the designs of his father, British computing pioneer Charles Babbage (1791-1871). This was one of approximately six demonstration models of the calculating mechanism of Engine No 1 built by Henry after his father's death, using unused parts from the original. Charles Babbage conceived the idea of building an automatic calculating machine which would eliminate the inaccuracy that occurred when compiling mathematical tables by hand. Never built during Charles Babbage's lifetime, it was a decimal digital machine - the value of a number being represented by the positions of toothed wheels marked with decimal numbers.
Date
Source

Demonstration model of Babbage’s Difference Engine No 1, 19th century.

Author Science Museum London / Science and Society Picture Library

Licensing

w:en:Creative Commons
attribution share alike
This file is licensed under the Creative Commons Attribution-Share Alike 2.0 Generic license.
You are free:
  • to share – to copy, distribute and transmit the work
  • to remix – to adapt the work
Under the following conditions:
  • attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
  • share alike – If you remix, transform, or build upon the material, you must distribute your contributions under the same or compatible license as the original.
This image, originally posted to Flickr, was reviewed on 3 September 2013 by the administrator or reviewer File Upload Bot (Magnus Manske), who confirmed that it was available on Flickr under the stated license on that date.

Captions

Add a one-line explanation of what this file represents

Items portrayed in this file

depicts

28 August 2013

image/jpeg

File history

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

Date/TimeThumbnailDimensionsUserComment
current06:16, 8 September 2013Thumbnail for version as of 06:16, 8 September 2013878 × 840 (463 KB)DrJungetilt further reduced
09:31, 7 September 2013Thumbnail for version as of 09:31, 7 September 2013878 × 840 (463 KB)DrJungewhite balance adjusted, deslanted, denoised, cropped.
10:25, 3 September 2013Thumbnail for version as of 10:25, 3 September 20131,250 × 982 (197 KB)File Upload Bot (Magnus Manske)Transferred from Flickr by User:Mrjohncummings

Global file usage

The following other wikis use this file:

Metadata