Addition and subtraction. Multiplication by stepping without table (to be done in store). Division by powers of ten (stepping done in store).

Made:
1835-1836
maker:
Babbage, Charles

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Creative Commons LicenseThis image is released under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 Licence

Buy this image as a print 

License this image for commercial use at Science and Society Picture Library

Creative Commons LicenseThis image is released under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 Licence

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The Babbage Papers at the Science Museum, London
Science Museum Group Collection

The Babbage Papers at the Science Museum, London
Science Museum Group Collection

The Babbage Papers at the Science Museum, London
Science Museum Group Collection

Notes in red ink were added to the title, as follows: 'Addition and subtraction are referred to in notation dated 9 August 1836. The multiplication by stepping without table is to be done in store. Division by powers of ten refers to stepping done in store. Multiplication with reserved table cannot be done because table is now stepped.'

This notation includes a related sheet described as 'rotary sectors for barrels', dated July 1835 and originally numbered by Babbage as 52x.

Details

Extent:
two sheets
Identifier:
BAB/F/052
Subject:
Large Format Document